Cool. Nice. Looks like fun. You have done quite a few treatments. The unfinished aspects may be working a bit in your favor. I would definitely haul your heavy amp down. A dedicated area that you can change is much better than big compromises in my book.
There are also additional opportunities for additional treatments… bass traps. absorption on the left wall to help balance with open area on right. Looks like a great place to experiment and tune. Congratulations.