You'll likely both drive yourself mad, trying to figure out exactly what size, & pitch
prop to get, based on the info which you're currently working with.
Yes, there's a science to picking a prop, or rather, getting close anyway. But much of it's based on data compiled over time. Factoring in; hull
weight, underbody profiles, windage, engine
torque curves, etc. etc.
If you get a Max-Prop, the pitch
is adjustable with it on the boat, with the boat in the water.
Plus they give a superb amount of thrust in both forward AND reverse. Not to mention next to no drag when sailing. Oh, and they ain't half bad when it comes to fuel consumption
Unless you're budget's super tight, snag one, or one of their competitors. There are a couple of other brands which also offer great efficiency in terms of power transmission
, both in forward & reverse, that you'll run across on here if you do a bit of digging (or someone's kind enough to chime in about).
The bottom line (for me anyway) about them, is how much thrust which they can generate in only a couple of seconds, when shifting them from forward into reverse (and vice versa).
That confidence removes a lot of the sense of hairiness out of close quarters maneuvering.