I am reconfiguring from 5.1 to 6.1. I currently have 2 QS8's on stands supplied by AXIOM in an open room 16X40X8, the HT area of that room is 16X20X8. The TV,Fronts and Center are in the corner of the room ( only place thay can go do to the fireplace). I sit and watch opposite of that about 15ft away( L-shape sectional). I would like to place the rear surround on the stand behind me and remove the surrounds from the stands and place them on the wall. My question is what is the proper height for the surround speakers? I know the rear surround is limited to the stand size about 3.5ft. I only have side walls available for the surrounds and not the rear. Should they all be at the same height? or is it alright to have the surrounds higher then the rear?

Thanks Mizer