Things never turn out how you think they will, eh? heh...
I have ordered 2 Polk dX10-4's in separate Qlogic .65 sealed enclosures. Since the dX10 has a SVC (too bad... I wish it was DVC), I'm going to run them stereo instead of bridged/paralel. That will give me 200w rms to each sub. The dX10 can handle 300w rms, so I'm definately not worried about blowing them. If they were DVC, I'd be able to pump 300w rms to each sub... but alas, I am not so fortunate.
All that's left is a 4 channel amp and my front speakers.