Leave both pumps on ballast bags?

I have three bags (left, right, walkway) that I fill/empty using one "over the side" pump. They are fly high pro x connections but still a hassle to move the pump between the fill and empty on three bags. I may do a thru hull install in the future but no time to work on it right now. I was thinking about buying additional pumps (1220gph online for like $35ea)and leaving both the fill and empty pumps connected to each bag. I figured this way I could easily add a lighter outlet near each bag and connect the fill or empty pump after throwing the correct hose over the side for each bag. Anyone done this? Working on how to cap the hoses when filled and capping the one not in use. This seems like a fast, relatively cheap way to improve the weighting process until I plumb her in down the road. Feedback or Ideas?