It will work fine but you do not have to run parallel lines. I have a Holley electric back by the tank and it pushes through the mechanical just fine. I have both a manual switch under the dash for priming and the like and a micro switch that is actuated by the secondaries on the carb.

That way, I don't have to listen to the electric pump all the time, but have the flow when I need it. This system has fed the Dominator on the street and track for years now.