If your planning on stuffing a pro charger on it I would save the money and buy a good set of aluminum heads. At least a set of trick flow twisted wedge. The deck thickness of the aftermarket heads will help to keep from blowing head gaskets, and go ahead and replace the head bolts with arp head studs. You can usually find decent deals on the twisted wedge heads used on eBay or craigslist. If you plan on building the motor any bigger than the stock 302 later I would go ahead and save a few hundred more dollars for a set of AFR 185’s or 205’s. The ford racing F-303 camshaft is a good off the shelf cam for boost, you will also need bigger a bigger fuel pump, bigger injectors 42# green top’s and a bigger mass air meter to run the supercharger.