This is the system I've wanted for years. I started researching and rebuilding a couple years ago when we moved into a larger house. The next item on my agenda is a new turntable, likely a Sota Nova, then perhaps new cables. Right now my cabling is a mismatch of Kimber, Audioquest, and Bluejean. After that, perhaps some room treatments.
Nice equipment. If acoustic treatments are a no-no from the wife, at least try to place the speakers at a similar distance from the sidewalls. A tape measure is an audiophile's best friend. However I do realize the windows are off center and it may obstruct some outdoor vision on the right side. I guess that's why I ended up building my own dedicated listening room from scratch. I did it when I turned 65. Before that it was in the living room, like yours, so I know. Compromise is the glue that holds couples together. Glad you are enjoying it!