Dedicated room suggestions

Hi, I have Crites speakers which are about the same dimensions and efficiency  I have been tweeking my system for 3 years.  Slowly and surely I have improved the sound.  My room is 12 × 21.  That is about the minimum width.  Here are some suggestion:

1.  Keep dimensions from sidewall and back wall different.  I  found the center of the speaker to measure during setup.  They are toed in to intersect behind my head. I would not put them against the back wall.  

2.  Room treatments.  Most important are the sidewalls.  I have 2 bass traps but am told a couple more would help.There are several good companies.  

3.  Speaker isolation.  I  bought springs on Amazon.  A very nice improvment.  You can spend much more.

4.  Lower noise floor on streaming system.

5.  It is best to keep equipment behind speakers or somewhere else.

I enjoyed a number of great comments and responses here. I can only add something I saw on Amazon (yuk) of all places. Acoustic curtains. They were VERY inexpensive and SAID to have many good sound enhancing qualities. As an apartment dweller I might look into a couple of those. If y look into their clams they are NOT just for soundproofing and even if they were, the same things that enhance sound proofing are good qualities for SOME sound enhancements in a listening environment.
https://www.amazon.com/s?k=acoustic+curtains+soundproof&crid=LHGS8AGRTKLM&sprefix=accoustic+curtains%2Caps%2C186&ref=nb_sb_ss_deep-retrain-50-ops-acceptance_1_18

@chiadrum 

you are new to the game?​​​​​​ Your gear is too serious to be new. :)

You've got great dimensions to start out with. Use the Bolt-area calculator to help.

@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.