I'm with JoeJames on this one. A Model 15 or Model 67 is the ticket. The Model 67 being stainless requires less maintenance of course. Not that it shouldn't be treated any differently than a blued one. The Model 15 Combat Masterpiece also has a renown reputation for accuracy. I figure the Model 67 to be the same. Regarding the grip size issue you're concerned with. Factory S&W grips aren't for everyone, nor are the smaller 'service style' grips. I've been told more than a few times I have ham sized fists. There are a plethora of after market grips out there. When I hear of folks needing a large pair of grips, Bill Jordan Troopers are the first thing that come to mind. Bill Jordan could palm a basket ball. One company (Pachmayr) used to make them out of a hard plastic. It may take a while to find a set, but if they don't fill your hand? Fella, you're going to have to have a set made by Herrett's company to fit you. Sadly, there aren't many gun shows going on these days. There would be a good place to start looking and being able to actually hold a set before purchasing them.
Murphy