Room is about 17' deep. I have two rows of seats on a platform. The farthest I could place a seat is at 16' and it needs about 2.5 3' for the 1st row. I certainly don't want to be any closer.
And so given that I know where I want the seats I'm trying to determine how big the screen should be before being too big.
I'm sure the guy who I hire to set everything up will figure out the audio. I can barely plug in a lamp