In actual use the electric pump inline not running won't be an issue. Use the kind of pump that shuffles back and forth inside, not a gear or other positive displacement pump.
Theoretically it would be some restriction because of the check valves and stuff in the pump compared to a clean straight piece of metal fuel line it replaced.. don't worry about it.

•1951 GMC 250 in the Project Journals
•1948 Chevrolet 6400 - Detroit Diesel 4-53T - Roadranger 10 speed overdrive - 4 wheel disc brakes
•1952 Chevrolet 3800 pickup
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"First, get a clear notion of what you desire to accomplish, and then in all probability you will succeed in doing it..." -Henry Maudslay-