There is no doubt that the room is one of the most overlooked aspects of an audio system. There is a product used in furnaces called spinglass that comes in 2x4 sheets 1, 1.5, 2 inch thick. They also have round tubes from 8 inch to 20 and 6 ft tall these make great acoustical room treatments. Yes you can hire some one but this stuff is so inexpensive and so easy to use that after a little trial and error you can get your room just fine. Once you get the spinglass you purchase material and wrap it with U pins a very easy process and then you use T pins to attach to the drywall. Anyone can do this and you will save a fortune. If you want an idea of what it looks like go to Stereophile page 174 and look at the ad by American Acoustic they sell essentially the same product except that they cover it for you.
After the room do not forget that everything starts at the wall. You seem to have decent powercords but you do not mention a good line conditioner like a Hydra, sound application, etc.
Also great audio racks and resonance control make a massive difference. One of the largest effects on my system was adding Zoethecus racks with the Z shelves. Yes they look awesome but the sonics are amazing.
After the room do not forget that everything starts at the wall. You seem to have decent powercords but you do not mention a good line conditioner like a Hydra, sound application, etc.
Also great audio racks and resonance control make a massive difference. One of the largest effects on my system was adding Zoethecus racks with the Z shelves. Yes they look awesome but the sonics are amazing.