A 600cfm carb and a dual plane intake would be wiser choices.
The pistons/compression ratio would depend on the combustion chamber size. I can't find any reference to the chamber size of those heads. They're mid/late '80s EFI heads with 1.94/1.50 valves.
Are your combustion chambers shaped like this
or this
It would be better if your chambers were like the first pic.
Larry