I am looking to upgrade - looking for advice

You got some mixed advice here, and made some mixed decisions.  Thanks to the power of reasoning I think you'll still be happy with the results assuming you don't  blind test when the new gear arrives.

1- Cables/Interconnects don't matter.  As long as they are sufficiently well made you won't hear sonic differences.  The distances involved are too short to require super thick cables or exotic materials so even the basic stuff will work.

2- Dacs/streamers or any digital equipment for that matter should be bought on features not sound quality.  They all sound the same at MATCHED levels.  The minute differences in specs are well below audible levels.  I've tested this myself, and I've read/watched other blind tests that have had similar conclusions.  Personally I would have kept using the Node, its got great features, and a solid app. Hopefully you bought the Eversolo through Amazon and have free returns.  If you don't believe me perform a blind comparison with the Node and see for yourself. The Evesolo outputs 2.6v while the Node is 2v so the Eversolo will be louder by about 2db, so you'll need to make an adjustment there.  I could be wrong on the math, I use a voltage meter, so maybe someone else can let you know what settings to run the Eversolo to match output level of the Node. 

3.  I don't necessarily agree with this, but there is plenty of evidence to support the idea that all amps when played below clipping and having minimal levels of distortion, will sound the same.  So in theory swapping from your Rotel combo to the Hegel will be under most conditions a side grade.  My feeling on amps is that they do make subtle differences in tonality, especially when tubes are involved (probably due to the higher distortion levels).  Also some amps may clip at normal levels if they don't have a decent enough power supply to cope with the impedance dips of demanding speakers.  The Hegel is on paper more powerful so you might notice an improvement at higher volumes.  In my opinion though, its not the way I would have spent money if I was looking to make improvements, I would have stuck w the Rotel Combo a bit longer. 

4.  The biggest difference maker will be the speakers.  I would have put the entire "upgrade" budget into this category.  What to get is entirely subjective but nearly any choice in the 4-5k price range that you probably spent on the Eversolo and Hegel would likely have been a noticeable upgrade over the B&W's.

But like I said, I'm sure you'll be very happy with the results you chose and will post a follow up response justifying your decisions and thanking everyone about how great everyone's advice was (well maybe not mine).  Blind testing and staying as objective as possible is very difficult when you just spent significant money and effort making these decisions.  A true audiophile would never spoil the fun and excitement of new gear with a rational and prudent evaluation. 

Well that was a pretty depressing post. I definitely will not show it to the wife since she is  already going to kill me. 
I guess I am surprised the preamp and amp make that little of a difference. I guess everyone should only spend a &1k on their amp until they are spending big on their speakers. Where is the break point for that.

i guess I have overrated the B&W 705s. I am able to return the H390 if it makes no difference and I know that is a possibility. That is why I got it with that potential. As far as the node is concerned I do believe that is a good product. But since I primarily stream and after I heard Hoffman’s review of the EverSolo I thought the Eversolo would be an improvement on the sound quality. Granted that might have been a mistake and If necessary I could turn around and resell it. It is a hot item so I believe I would be able to sell it. Maybe I take a hit but I don’t think it would be large since I bought it used.

Still kind of surprised that I will not notice an improvement with the Hegel.  Are the 705s that bad. I thought they were pretty good bookshelf speakers. So it sounds like I overrated them and underrated the Rotel pieces. I am at least 45 minutes west of St Louis and there are no stores out my way to be able to listen to different equipment. Maybe there is in St Louis. 
So I will need to determine if the H390 makes a significant enough of a difference to keep. Otherwise I will box it back up and return it. That was 75% of the money I spent.  

Ok I meant to be sobering but not depressing. Maybe realign expectation with reality. I actually disagree with the premise that amplification within its limits all sounds the same, I feel tonal character changes among other differences. Detail, bass, soundstage, treble, but it’s more subtle than people lead on. Hegel makes fantastic gear, but its straight down the fairway neutral so picking it apart from other amps can be difficult but they’ll match well with anything and the 390 can drive literally anything so it’s an item you can keep forever. But the Rotel stuff you have is no slouch either. You’ll see when Hegel arrives and can make your own conclusion on value.

There is also nothing wrong with your B&Ws per se. It’s just not my cup tea, I find the treble a bit hot and at times they can sound artificial compared to other speakers. They may work well in your room and with your music so if you like them, keep them, it’s certainly easier to change gear than speakers. But if you were going to make an upgrade that’s where I’d do it to get the most bang for your buck. I’d even look further up the B&W lineup if you really like their house sound. Please don’t be depressed, but manage expectations and don’t feel compelled to spend a certain amount of money or change everything at once.

It’s digital gear that I have the hardest time justifying. I’ve had a lot of stuff in my system both dacs and streamers, so I’m not talking out of turn. Maybe there’s something out there that will mop the floor with the Node but I haven’t come across it. I did say buy on features and the Eversolo has a really nice display and is a pretty good looking unit. I think it also decodes MQA although Tidal seems to be abandoning its MQA files in favor of flac.

One last thought- you could look to add to your vinyl collection and upgrade the player, arm, needle etc.  Analog sources are much more flawed spec wise and the differences can be apparent, so maybe not to the same extent as speakers but depending upon how much time you spend listening to vinyl it maybe worth investing there as well.  I’m not the guy to ask though, I only stream.  Don’t even have a cd player anymore.  

I have yet to hear a B&W, (and I too coveted and auditioned numerous models of B&W when I was in the early stages of piecing together my first true audiophile grade set up) that were not overly bright and gave me listening fatigue after only a short while. Cancel/send back what you are able and begin again with speakers...both you and your wife will be far more pleased with the results.

On the plus side, with the Hegel, now your amp is the strongest link in your chain. That’s not a bad thing, aside from: at 250Watts, it is a beast, way above the B&Ws’ capacity. I don’t know the B&W 705 S2 and how they sound in your room and how big is your room. If you add 2 subs, maybe it will be a huge step up from your previous rig.

I used to think speakers make the biggest difference, but here is my analogy: speakers emit the sound that you hear, it’s the constant that can’t change. It’s like a car and the driver, the speakers are the car and everything else are the driver, your room, placement, sweet spot, amp, source, cables, etc. My approach is to find a speaker I like and then I "drive" the best and most out of it.