In my opinion you have THE perfect application for a healthy vacuum secondary carb, say 870 cfm.

This carb with little tuning would allow you to bury the throttle at any time and allow your engine to respond more naturally. You could still get by with the double pumper if you learn to control your foot a lot more .............

Vacuum sec carbs are designed for heavy vehicles where some RPMs need be built before indulging the cylinders ...........