Well I am trying to figure out what subwoofers to go with. I am thinking about either 3 12" Kicker L7's, 3 12" Infinity kappa perfects, or 3 12" Polk Momos. I plan on runing these with a JBL bp 1,200 watt amp. I was thinking maybe latter on down the road that I would buy a 4th woofer(of whatever brand I choose from the ones above) and a 2nd 1,200 watt JBL amp. So then I could put two 12s on each amp. What do you think I should go with? Is my idea about adding the 4th woofer and other amp a good one? Would the single amp setup be compition worthy?