Dedicated room suggestions

Thanks for the suggestions guys. I will check out the tools that you mentioned.  Regarding the room layout, the entry door is to the left center of the room while the window is centered on the outer wall. 
When you step in, on your left a small closet will need to be framed to cover some HVAC ductwork. I was thinking about a soundproof window cover and a sound engineer friend of mine recommended an outdoor door as well. 
I snapped some pics but from my phone at least they want a URL to post pics?

My laptop is charging. I’ll try to post pics later. 
 

I should also mention that with certain recordings (only the worst recordings, everything else is fine) with my current setup I am getting some harshness. But my setup is pretty pathetic. The speakers are maybe 4’ apart and I am sitting maybe 8’ away. My new room will allow me to properly space  the speakers and sit much further away if that provides the optimal results

I heard none of that harshness when I demoed the amp and streamer/dac. That was in a large room with the speakers far off the wall and spread apart as Klipsch recommends. Literally listening to the exact same recordings. 
 

Thanks again. I have some homework to do, at least I’m in the right place :)

Thanks again all. It will take some time to get the room finished but I will certainly check back in with results when the time comes. This is pretty exciting as my system sounds pretty great now unless the recording is just horrid  i even listened to some tracks from Back In Black last night that sounded pretty darn good now that everything is burning in  I wasn’t hearing that shrill harshness that was present earlier. The current room is a bonus room with the speakers facing the finished wall, and the wall behind the speakers and amp is the half wall for the staircase leading into the room  Initially, simply because I had the tv stand the opposite way, I had the speakers facing that half wall  Simply flipping everything made a large and noticeable difference  I can only imagine an enclosed and properly treated room  

@grislybutter yeah I pretty much went all in. I have no intention of trying out a thousand different options and obsessing over every nuance, losing 20k in the process. I wanted power, bass, speed, realism. Huge, room filling sound. It's all there in my present system. Now to maximize results :)

I initially thought that I would spend far less, but to my ears the difference between a setup like mine (lower 5 figures) and the 5-10k system was a night and day situation. So I dove in head first. I did get everything at fairly substantial discounts. Cary Audio and their sales are hard to beat. I heard a killer Primaluna amp, but found out that production is in China. That was a no go for me .Especially with the chance to support a business that is 20 minutes from me.

Just had a thought- imagine if everything was as well recorded as Steely Dan or Marcus Miller- this would barely matter :)

I know that's not true but even under far from optimal conditions man do those recordings sound amazing.