The only builder I am aware of in Florida is Mike Terraferma (I think he's near Tampa, but might be Miami). He's well regarded by some; I've never seen his work.

Going here might give you some ideas:

http://forums.thepaceline.net/forumdisplay.php?f=14

This is a pretty good list of some custom guys...

http://forums.thepaceline.net/showthread.php?t=113817

If I wanted a ti frame, I'd go to Tom Kellogg...hands down. If I wanted a modern steel roadie, I'd probably be talking to Dave Kirk...Bedford...Anderson. It's really preference. For stainless steel, I'd probably go right to Waterford and go for 953.

I don't know who that gentleman's builder is, but...for me...I want a guy who's been around and who has built a LOT of frames.