To really help you there should be more information about your RPM at WOT and the specs of the current prop. If you want an aluminum prop I would focus on the Quicksilver Nemesis (also known as Mercury Spitfire). It is not the fastest prop but will give you good holeshot. Keep testing different pitch sizes until your WOT RPM without passengers, gear and low fuel hits 5.000 or slightly goes over. A better result will be with a stainless steel prop. And consider something like smart tabs for faster planing.
