Recommended 4bbl carb for stock 318

Well this carb turned out to be a 600CFM with VS's, but I understand the differences better now between double pump and VS's, and why VS is recommended for mild street driving, and I see why double pump is best on throttle control for power
I defiantly understand the physics, I just never really thought about it until you pointed it out, which was a good thing. As I said I planed on changing the rear gears at some point, but never really considered the effect of the torque converter stall speeds. And I assume 1800TC is the same as saying 1800 ftlb stall speed, but I can see the change to a different gear and stall speed having a better affect on power performance. And if I do use this carb I can upgrade something else, gears, cam, TC, but now I'm not sure what to go with first? Gears or cam?
Every one is gonna say gears!