I'll take Trevor up on his offer of a 3d rendering in the new year....
I wanted to add I'm really thinking about adding a multilayer bass trap at the back if the room. I'll have the free space and it should act to remove some echo too.
With Trevors assistance I'll have another layout option.
Right now the screen is nearly wall to wall, floor to ceiling. There is 8 inches per side, 8 inches to the floor and about an inch and a half to the ceiling. Most wouldn't know theres a window and even if they did its 6' or so off the floor. This will be a big relief moving forward.
I've been planning an air return above the PJ too, its looking more and more like a complete re&re at this point.