Hey guys I have a Denon AVR-4802 receiver and its a 7.1. Now my question is I'd like to take advantage of it but I'm not sure if my room size will permit it. My room is 9' wide, 11' long, and 9' high. Based on a 7.1 THX Surround EX setup I was told the rear two speakers would sit close to each other about a foot or two away. If this is the case the distance between the front, sides, and rears would be 5 feet. Is this enough space for this to sound good or should I stick with the 5.1 setup? If I leave the rears spaced out that would leave about 4 feet between all the speakers if I went with the 7.1 setup.