I recently moved and the stereo area is considerably larger as the living/dining is one room. I was previously running a 5.1 with M60's, VP150, QS8's and SVS PB1-ISD sub. The new residence's room is 29'long, 21' wide and 12' ceilings. The listening position is 12' from the mains, leaving 15' to the rear. My reciver is a Denon 3805 which has 7.1. I had a pair of M3ti's in the bedroom, and was wondering would they make good rear surround sound? Also, what would be the best way to mount them in a corner (the two rear corners of the room)?