Help on 408 build

I’m not a professional engine builder but what are your thoughts on him getting away with a set of aluminum heads? His combo would run better and with the efficiency of the aluminum head you can always get away with more compression. Heck I ran 11.4-1 in my 408 on BP93 pump gas and a Racer Brown cam. That combo easily ran high 9’s at the track with a small .520 lift cam. Lots of cheaper aluminum heads out the to pick from but I would have a set of ProMaxx heads on it if it was mine.