Fuel pressure dropping while driving and under acceleration to zero at idle runs 4 lb electric Blue

The Holley rotor/vane series of pumps (red, blue, black) are not designed to have to pull fuel in any way shape or form. They are designed to push fuel. They need to be gravity fed and have some head pressure on the inlet side. Your setup is exactly why people install these pumps and then complain to Holley when they don’t last more than a few miles. I can’t tell you how to spend your money, but that pumps needs to fed from the bottom of the tank from a sump and in a perfect world mounted lower and behind the tank.