Prop recommendations

[Crestliner1760Bob]

I have a Crestliner 1760 (17 feet, 60 inch wide bottom), console steering with a 75 HP Mercury 4-Stroke, 2019 boat and motor. I want to get a spare prop but was thinking their may be a better choice than the 4-bladed spitfire model 8M8026590 that it came with. I want to stay with an aluminum prop, I use the boat for bass fishing and I don't do any trolling. Should I go to a 3-blade propeller? What are the advantages and disadvantages? Any advise on what size prop I should get? I appreciate any help.