First thing your doing wrong is going by peak wattage. Peak wattage means nothing in audio. You need to be looking at RMS wattage, nothing else for power ratings. Realistically your looking at around 1500 - 2000 watts rms.
Sony subs are weak, not going to pound like your looking for, quantum audio makes garbage. Polk speakers are pretty good, nice choice. Jenson makes garbage speakers. Rethink your subs, the rest of your speakers (leave the Polk speakers in there), and different amps. Here is a good reference list of speakers, CDT audio, Focal, MB Quart, Memphis audio, RE audio, Elemental Designs Audio, Rainbow, and Alpine. Good list for subs, Fi audio, Elemental Designs Audio, Rainbow, Digital Designs, Alpine, and Memphis. Amps: Crunch (good for budget builds) Hi-Fonics, Memphis, Elemental Designs, US Amps, Rockford Fosgate (T1 and the T2), and Alpine.