Why not remove the 10g buttcap to make your P1 more maneuverable? ANY added weight anywhere (even the handle) increases swingweight.
Did you try the 200G with a powerful multi? Lots of pop.
the 10g buttcap doesn't change the swingweight very much according to the customization tool. maybe 1 or 2 pts tops. I had poly mains/synthetic crosses in the Dunlop at 55lbs. should have tried a full multi. When they get marked down maybe the Prestige S and Bio 200G get revisited.