Carb cfm with ported heads?

So you think now the exhaust will be the choke point?
My exhaust guy won't do 3" over the axles. That and the 3.23's are pretty much non-negotiable. Mainly a street car, but would like to crack 11's at the track.
Will the 750 hold me back with the added flow? I want a bigger carb, but do I really need one?
I’d just try it with what you have and go from there. 1 thing at a time.