Propping advice on new boat, pls help

Got a new to me 2000 Caravelle Interceptor 232, 5.7L and Alpha One Gen II in it. Boat currently has a 14.somethingx19p stainless on it and she'll spin 5100rpm like its nothing. 45mph on the ole water speed gauge, didnt get a gps number unfortunately. She needs a propeller to get the revs down a bit, just not sure if i want a 23p 3 blade or 21p 4 blade. The boat is pretty heavy and im not that worried about top speed, would a 4 blade be a good choice for getting out of the water? My usual load is loaded cooler or two, and maybe 3 to 5 people if im going out for a lake day. Dont plan on any towing either if that matters.