Choosing Cylinder heads

Hey guys,
I'm building up a 440 and stroking it to 511. Id like to use a iron head. Is there a iron head that flows as well as the edelbrock/procom/stealth heads? Or is trying to go iron not worth it. IE if you port the heck out of a head will it ever come close flow wise to a non ported aluminium head? Goal is 600hp on pump gas.
Id like to keep the compression low so add on a supercharger someday. Money being tight I hope before I die.
My machinist wants to go full roller on the valve train. Tho this frees up the ponies how does it affect the life of the engine. I'm trying to push a 71/72 Charger weighing in at 4300# for weekend fun, not a drag strip runner.
Thanks in advance for pointing me in the right direction.
Author: 71Charger