FWIW, I've checked my latest Road Runner's AVS for bowl evaporation; after a week of sitting in my shop, the bowls are still half-full.

As for the electric + mech pump flow, ran that setup on my Hemi car and 2 others for 33 years so far, no problem.
One uses the Carter electric, another a Holley 110, a third has a Holley inline.