Had a 60 2 Stroke on a 17ft aluminum Tracker.
I played with several, a 13 pitch was preferable for heavy loads, hopped on plane much quicker. I ran a 14 most of the time because I usually fish solo.
I'd try a 13p Mercury Spitfire 4 blade. They're a little expensive, but light as a feather and they plane out quick and provide a lot of lift.
You have a lot more RPM on the table, recommended is 5500 on that motor.