I've been thinking of upgrading my home theatre speakers and am looking at Axiom. I thinking of M60 fronts, VP150 on-wall center and QS4 rears. I have a 110" projector screen and my seat are at 11.5' back with an additional 8' or so behind the seats. Ceiling is 9' high and the room is an L shape. I'm not too sure if the setup I'm looking at is overkill or not. Would the VP100 center be enough? Could I get away with on-walls for my rear speakers.