Hyper Pak vs Super Six

The engine is stock right now, but I'm going to shave off 0.050 to bring compression up to 9:1, then do something with the exhaust (maybe some home-made Dutra Duals). Would that be enough to warrant a four-barrel, or would the Super 6 still be enough?

I also saw that offenhauser makes a dual-carb intake (two 1-barrels). Is this just a gimmick, or would there be a noticeable difference compared to one 2-barrel carb?