I agree with what barron said about the raise. Why would you possibly want to drive out hands and money when you have the best position and the second best drawing hand in hold'em? This is the spot you want with this hand, (the button) and this is the kind of pot you want for this hand (multi-way) the only drawback is your position in regards to the original raiser, and the fact that the pot was raised PF. But even with the PF raise, you're going to be getting excellent odds on the flop.