Ok, I got this GK 400RB IV that I reaally like. I want to pick up a couple of 8 ohm cabs to run it at 4 ohms for maximum effeciency. Im now looking at the Avatar 212 neo, and the Avatar 210 neo. Would this be OK? Or is there a point when you have to much cabinet and not enough amp. The GK is 280 watts at 4 ohms. I usually dont play out anymore but I have a benefit gig coming up, and I want to move some air.