I've just skimmed over your build. Your theater is going to be truly awesome.
In my build, I'm putting in a 140" X 60" SE4K 2.40 AT screen and using a JVC X70 (RS55) projector. I seriously considered the Sony, but it's a bit steep for my budget.
A 13' screen will be impressive.
I'm also going with JTR speakers for my LCR and surround speakers (T12 LCRs, mixture of slanted 8's - height, side, back and Single 8's - wides). I've just recently hung my height and wide speakers. I'm using a Denon 4311ci receiver and a second Outlaw amp to run my 11.2 surround system. I'm pretty sure that the 4311 is the only receiver that will allow you to run all 11 speakers at the same time; LCR, height, wide, side and back. With other receivers you have to choose height or wide.
Your subwoofer system will be amazing, I'm sure. I stuck with JTR and got two powered Captivators, but I'm prewiring for two more. I don't think I could do more given the space constraints of my upstairs theater.
Good luck with your build.