I'm building a 26'x28' great room and want to put some rear/surround speakers in the back ceiling area. This ceiling area is sloped toward the seating position. The speakers I already have on hand are Def Techs BP2004's for R/L fronts, CLR 2002 center and a pr of BP-1X's. I understand the BP's are probably pretty good for the rear surrounds, but since I'd have to mount them on the back wall of the room (26' from TV), I think it'd be advisable to install something in the sloped ceiling, closer to (and aiming at) the sitting area. Any thoughts/advice would be much appreciated.