Another 302 Head Question

Called the engine shop today.... one of the 302's is cracked between the exhaust and intake valve. He is unsure; there is a possibility that they have a core sitting out back. He's going to check for me.

Anyway, if he doesn't, what should be my plan of attack? Pull the original heads, have them milled, can hardened exhaust seats be installed?, and a lil port and match work?
Or should I pick up some aluminum heads?
I personally think aluminum heads are a waste. My intake is 318 sized, my cam is small and I need torque. Larger ports and valves on aluminum heads will slow air velocity; therefore reducing low end torque and response. If you think differently, tell me. Still going to upgrade the converter either way.
Cam is all in by 4500rpm anyway lol. Intake range does not extend much further