I have an Atomic 4 30 hp direct drive on a Bristol 32 (1969) and considering a two or three blade prop to bring me to 2,000 rpms. Presently have two blade 13" 8 pitch, with 1,400 rpms max. In the past had a three blade 13" 8 pitch bringing it to 900 rpms. Any suggestions regarding size and pitch to achieve the 2,000 rpms?Thanks.