High compression, big cam?? Help

You can go 12-13-14 to one with domed Pistons but they get heavy, that's why most like to use flat top Pistons for the lighter weight and better flame travel. Your going to have to check out piston suppliers and calculators to see where you will end up taking bore and gasket into account. As far as cam the compression and head flow will dictate, once that is known call comp, isky, etc.. For there input.