My dedicated basement HT is in progress, just finished the drywall on the ceiling, sorry beat you to it Nick
Anyway, I built a stage out of 2 x 8's below my screen and the mains will be on each side of the screen, the center below the screen in the center
, and the sub I haven't decided yet. My rear Qs8's will be behind the listening area, about the same distance apart as the mains, and my left/right surrounds will be between the 1st and 2nd elevated rows. All surrounds will be hanging about a foot below the ceiling...My Sanyo Z2 projector is slightly behind the 2nd row of seating....