340 cam change, carb rejet suggestions.

Thanks for your opinion on the carb. Proper adjustment of the air door over the secondaries on a Carter Thermoquad is the key to a smooth transition. I have had my "fun" with other brands of carbs. One back fire and the power valve is shot. Leaks, etc. Out here in Arizona, the phenolic float bowl keeps the gas cooler and less percolation. Summer temps are 115°F before you start the car.
Once again, Anyone with extensive experience with a similar setup please chime in.