I've decided that a pair of Avatar 8ohm cabs will support my rack. I'm tossing between a couple of different configurations and would like the input of the board. 4X10Pro over 1X15Neo -or- 2X10Pro over 2X12? Poweramp is QSCrmx1450 (1400W@4ohm bridged). I play everything except metal. There are outdoor "festival" type gigs coming up. Opinions?