Oh great! I just ordered two EP500's...

Well I can answer most of the questions even though I haven't received the subs yet.

2 x EP500
1pr M22's as mains

RCA, Denon 3808CI, Crossed at 80Hz, highly unlikely to use the triggers.
M22's v3, 2 x EP500v3, VP150v3, QS4's, Denon 3808CI

My Botswana Safari photos