I have a power acoustik 980 watt amp, i am presently running two rf p212s4 subs on it. They are parallel bridged and it is bridged down to two ohms. I was curious if i purchased 2 more p2's wired them in series parallel (causing the amp to see a 4 ohm resistance) would this be enough power for the subs or would i be better off sticking with what i have. Any suggestions? Thanks