Cool, that is almost the same as my setup. But I am running my 3.7i with 7BSST2.
(missed the cubed by a year, dang).
Almost the same size room. It's 16' wide for the about first 13' and then 18' wide for the last 10'.
And I got a projector and screen just like in the picture.
Except I went with the Magnepan Center Channel.
Also using my older 1.7s for the rear channels.
I love this setup.