Please Critique my Setup and Recommend Upgrade(s)


As a lifelong musician and former recording / pro audio engineer, this is my first foray into the world of HiFi and I could really use some advice and direction.  Last week I bought the following setup for a dedicated listening room that is essentially a 13x13 square room on three sides with the area behind me extending back another 25 or so feet.  There is a partial backwall about four feet wide but it is mostly open air behind me.  Ceilings are 9' and I have GIK bass traps in all corners, early reflection points on the side walls, and panels overhead between speakers and listening position.  Speakers are about 2 1/2 feet from back wall, 6 ft. apart, slightly toed in on cheap stands weighted down by cinder blocks.

1. 2017 VPI Scout Prime turntable with Ortofon Bronze
2. 2017 Rega Brio Integrated 50wpc Amp and Phono Stage
3. ELAC Uni-Fi UB5 Speakers

So far this setup certainly sounds good, but it isn't blowing me away either.  At lower volumes the soundstage feels a little small and two-dimensional.  At louder volumes the sound seems to fill the room more, thereby enhancing the soundstage and making the music feel more natural as opposed to coming from directly in front of me.  The stereo imaging is okay, but I expected a little more stereo separation.  Also, perhaps the speakers are still breaking in, but the ELACs don't seem to do the best job of presenting the music in a cohesive manner.  It sounds like the frequency bands are a little disjointed.    

Should I stick with the ELACs but consider a higher end integrated amp that can feed them a little more power like a Parasound Halo?  Or should I nix the ELACs and invest in some more efficient and higher end loudspeakers,e.g. Devore, ATC, ProAc, etc...?  Would I still get an audible improvement with these nicer and more efficient speakers if I stick with the Rega Brio, or do these high end speakers warrant a truly high end amp?  I ask because I likely can't upgrade both speakers and amp at the same time.    

I also considered the KEF LS50, but it seems like they are similar to the ELACs in that they are rather inefficient and need a powerful amp.  

   
529proaudio
Also, just to be clear, the room is actually about 13' wide by at least 40' long. My designated listening area of the space is 13x13. 
If I were you, I would do this:
1. Get a sealed sub,put on a corner, not symmetricaly.
2. Put the best cabling you can afford from power cord to speaker cables, look for occ.
3. Try all the possibilities of the speakers positions.
Good luck!
A lot of recs for the Tekton so far. Is this a new speaker company / design?  The only reviews I can find are kind of obscure home theater sites. 
I agree with what several others have already said, focus on your speakers first...I've had Polk, B&W, Energy, Monitor Audio, Definitive Technology, Cambridge Audio, Event, BIC, Wharfedale, Sunfire, Pioneer, JBL, Bose, Pinnacle, PSB, and several others.  I have sold most of the above brands off, some of which I had more than one model, and have settled on KEF R300s, which someone above has already mentioned to you.  The detail and esp the stereo separation will floor you...I also have the R400 sub paired w/them, and am very happy w/this setup.  I also have the Halo P5 pre, which someone else mentioned.  I bought it mainly because of the built in crossover section...but be advised that the DAC in it stinks.  Of course, if you are doing a [mostly] analogue system, that would be a non-issue. I am using a hybrid [Vincent] amp that warms up the sound somewhat ~ overall, a very nice, detailed sound.  Oh yeah, I am not doing a turntable at all, I'm using an Oppo UDP 203 to play CDs, which I know is not very trendy right now.  How funny that now CDs are "old-school".  But some of the things you are looking for [stereo separation, big soundstage] I have in spades.  As you know, and many above have already said, it's primarily preferential ~ keep after it, tho, because you can definitely get the sound you want...you just have to keep experimenting. 
Well, that was a long and roundabout way of saying, I second the vote for the R300s ;-0