Unscrew the relocation kit and just run a filter on it. Drive around a few days and see what it does. I never liked the idea of miles of hose carrying oil between the pump and engine.

The purpose of running a gauge is to tell you whether the pump is getting old. That would cause low startup pressure.

I wouldn't worry about it. The motor isn't under a lot of stress during startup. Plus, plenty of modern healthy motors will flail around in their bearings before the pump catches up.