want to build new motor

The Edel.'s are a nice option. Think price and head bolts as well. You'll want to run and extra point of compression vs. iron heads.
Example would be 11-1 acts like a 10-1 iron head and would use 93 octane.

You could sell the OE head for a cost offset? I don't know if you want to keep the heads or not. Just an idea. Sell in conjunction with the OE intake and carb?