Need big block help.

Sorry guys for not replying its been a few rough days at work. Anyway I started to disassemble the engine I have 452 heads now I have heard people liking these heads for the hardened seats and bigger valves... Is this something work looking further into maybe a port and polish, what if I also have a machine shop mill them down a few 10 thousandths to increase compression? Or do I just hang on to them and look to aluminum heads? Keep in mind I still want to use the tunnel ram intake with dual quads. As soon as I have a moment I will post pics of the engine as soon as I can thanks for all the help