What Amp to buy for KMT6

I just ordered a pair of KMT6 tower speakers and need an amp to run them off of. I would also like to add a subwoofer. I've been reading that the zx450 will do fine for the speakers, but can I run a woofer off the same amp? I'm also looking at the mx700 amp. I believe that should work for the entire set up. I don't know much at all about sound systems and combing through the other posts has helped a little. Any advice would be much appreciated.