I would be tempted to bring the AT screen 3 - 3.5' forward, and keep the 2.35 AT screen size down to 120" or even slightly less, to bring up the
lumens, and shorten the speaker throw distance. The shorter distance to the seats, would put more high frequency information at the front row.
The center channel would be raised.
SeymourAV Centerstage XD material in a minimally framed front wall, would be a very nice, and very affordable set up. You could also build some
magnetically attached side masking panels for 16:9 images, if you put in a few metal plates near the ends of the screen.
The deeper AT space could be put to work with larger bass traps, a treated front wall, and multitple subs.