Fuel pressure regulator with mechanical fuel pump

Does anyone use a bypass regulator with a mechanical fuel pump?
Planning a new fuel system for the Scamp and would like to add a return line back to the tank. Currently my set up includes a quick fuel mechanical pump, hot rod series quick fuel carb and 3/8 hard line from tank. Was looking at using the quick fuel bypass regulator part# 30-899qft (which has an adjustable jet for low pressure application??) and run 3/8 return line back to the tank.