Good looking fishing boat Kelvin. Ever since I got my boat I am yet to bring in a big fish. Have more luck in my dads 3.9mtr tinny.
Just an opinion on props, if your engine can rev within its maxium RPM range of 5000 to 5500 it is more or less proped right. [in my case a 3ltr V6 it revs to 5350 - +]
Having said that there are props for cruising, top speed, mid range, offshore props, it can drive you crazy in the end.