Helicopter Academy has time building (with an instructor) for $150/hr, and they have helicopters all over FL (including an R44 for $300/hr out of Pompano Beach). That might be your best bet, but I don't know if you have to buy the time in block or if you can get an hour or 2. Pretty sure they have a base up in the Panama City/Pensacola region.
Also, fish around on VR for happyappy (Apple Helicopters (dot) com???). I know he has an R22 that he ferries from Ohio to FL for the winter, and does time building in it. Might be South FL though. Sorry, I have no details.
Good luck.