I have an EP800, M80 mains, VP180 center, and M22 rears. Using a 250 watt five channel amp at 8 ohms (500 watts at 4 ohms), would the conventional wisdom be to have the crossover for my front three speakers set at 60 Hz and the rears at 80 Hz? Does the 60 Hz crossover for the entire front soundstage put considerably more strain on the amp? Is anyone doing 40 Hz for the M80s and VP180? Thanks.