I did the prop and pad measurement up top and came out with 4.5". Pad was 15.75 and prop shaft was 11.25. I have one more hole on the engine bracket, no jack plate, which would raise engine approximately an inch. Boat usually runs 58 at 5650 rpm wide open with 2 guys with a 25p Renegade 4 blade. Other prop is slower 26p original Raker. Thoughts?