I know we're spending your money rather freely around here... but if you're willing to pay $145 for an M2 center... what about $250 the VP100? It would, in my opinion, look better, and (though, again, spending more of your $) you could buy either the shelf that allows you to place it on the TV, or a center channel stand to place it in front of the TV. The VP models aren't too deep... so I don't think it would be that intrusive if it were on a stand in front of the TV. (There are plenty of cheaper, better looking stand options than the axiom model, in my opinion.)

My suggestion is similar to that of many people around here... wait a little while, save a little more, and don't buy a setup you'll probably want to upgrade almost immediately. My suggestion would be M60s, VP100, QS4s, and use your old sub. You aren't going "crazy" for the VP150/QS8s... but still get the VP and QS series speakers, which are intended to be the setup for HT.