Fisherman 222 prop question

[south river]

Repowering a 2001 Fisherman with t top with a new 3.3 L Yamaha 250. Looking for thoughts on prop. Having looked at the Grady website, i'm thinking a SWSII 17 inch would be great. But I'm also wondering what the same prop in 18 inch would do?? Old motor was a 2001 OX250 that turned 5300 rpm and 45 mph at wot with my average load. Prop was black painted SS 19 inch yamaha. Thanks!!

And yes I saw the 228 repower post. Still wondering.....

 

[Doc Stressor]

You do not want to overload a 4-stroke or they will make oil. 5800 rpm at WOT is about the lowest you need to prop the boat. 6000 rpm would probably be better. A 17" prop sounds about right.