I guess I was thinking there was a performance difference between Dual Opposed and 4 single cabinets. I suppose the loss of energy from vibrations is performance.
Based on the testing I can find for the EP4000, I think I want more power than I'd get in 2ohm stereo. I haven't seen any test results for the Crown or Cerwin Vega 5000, but they seem like better options assuming they put out the rated 5000 watts in 4 ohm bridged.
Should I also be looking to pick up a miniDSP or wait and see what kind of response I get in my room? I think I'll add the omnimic to my PE order list while I'm at it.
As far as power to the amp, the panel is close enough that I don't mind adding another drop if I need to. This crossed my mind and I think I have a couple 20amp breakers left over from my last home remodel. I know I have 10-2 and 12-2 wire and outlets.