Electric pump before or after mechanical

The Edelbrock Performer 1404/1405 carb float bowls are known to evaporate dry after about 3 days of sitting. I have two of them, I looked into this problem and it seems to be a common problem. The bowl vents allow the fuel to evaporate right out of the bowl. Mine starts fine when warm, but after it has been shut down for 3+ days it takes a lot of cranking for the mechanical fuel pump to refill the float bowls. I'm going to install an electric fuel pump to get around this problem. Meanwhile, to avoid excessive cranking after the engine has sat for 3+ days, I bought a large 100cc syringe off ebay, remove the air cleaners, and squirt 40cc of gas through each bowl vent into the float bowl, then she fires right up every time.
edelbrock vents.JPG