Unless you want to get in and out quickly and with minimum expense, You probably need to step up to a forged piston.
JE, Wiesco, and Diamond are popular choices. If you are replacing the crank, I'd highly recommend a forged crank. If you are going that far, a nice set of h-beam rods might be the ticket. Replacing the middle two main caps with billet steel/studs is a good thing to consider.