I am thinking of repowering my 2013 Triton 21HP with a Suzuki 250ss. What kind of speeds can I expect? I know that is a subjective question but looking for averages just myself and with 2 people. I am looking for something that is going to last more than 460 hours. What kind of prop would be a good starting point? I could run 74-75 with the Pro XS with a 25p Fury 3 blade.