Your engine build sounds really good IMO. With your combo, I think it will run well no matter what you choose. You'll simply be chasing some horse power at the expense of a little drivability and fuel mileage. You'll need to decide.

If it were mine, I would try several combinations of intakes and carbs. But that does not sound like your cup of tea.

So, if you don't want to leave any power on the table, at least a 750 dp, and RPM. An 850 would probably et and mph better.

A thermoquad on a stock intake or standard Performer would drive real nice and clean, with a very snappy throttle.

An 800 AVS on a CH4B would probably be a nice combo as well, considering your intent for the car.

I think any of these would run well. Make sure you understand what you'll need to do to make the RPM fit under your hood.