Is this a reasonable thing to do (why or why not)?
it's your bike, you're the one riding it. only you can answer that.
Who makes good SS rear hubs.
Surly, Chris King
they're gonna be more expensive, that's a given. these companies don't move nearly as many parts as campy or shimano does.
Are their SS specific wheels available?
there is one shop online i know of that'll sell you a SS wheel, though unfortunately i can't remember their address. there's no reason you can't have a bike shop build up a wheel for you though with whatever hub you choose.
Hope to see you on the boardwalks.
i'd hope to see you in the dirt moreso than on some silly little boardwalk