Couple of differences when swapping are SS props are usually cupped which correlates to Wes' comment to drop an inch, but cupping is used to get more prop grip in situations where non cupped props will ventilate....good to have. Grabbing better puts more load on the engine so you need to back off the pitch to compensate and maintain your RPMs where they are.
SS props may have "Rake" (blades are bent back from the root rather than emerging perpendicular to it) which is popular on Bass Boats to help in getting the bow up for riding on "The Pad" and getting higher speeds. You won't be going 65 mph like they enjoy, but the Rake can help to grip the water better, resulting in more engine loading, but its also a bow raising mechanism which, in raising the bow (somewhat), while at a good planing speed, will reduce the hull "wetted area" which reduces drag, which allows the engine to pick up RPMs resulting in more speed due to lower "Prop Slip".....the difference in forward travel of a screw turning in wood vs a screw turning in a semi-solid.
They also have thinner blades that are more efficient and don't bend, but on that engine/speed ranges, those aren't issues.
