I don't know as I've always gone with what the boat likes. Some sizes you'll only find in either 2 or 3-blades. That motor can take some serious prop for its size. A Grimmie 40x52 3-blade could be an option.
If you're using the smaller cable from the Miss Vegas you will have to put some spacers bewtween the prop and shaft. No big thing for most of us as we have brass tubing laying around that wil help you adapt to the larger bored props.