I have a game/theater room over the garage. It is 14 1/2' wide x 7 1/2' tall x 40' long. Flat part of the ceiling is 100" wide. I am new to A/V so i need some ideas. I am thinking of spending about 5-6k on it. I want a projector and 7.2 setup. The sceen will cover the only window when it is down.