If the forecast holds you may have picked an excellent time to visit Florida. Raul has covered things pretty well. Some of the more reliable wind forecasts for the Keys and SE Florida come out of:
http://www.srh.noaa.gov/mfl/marine.php
Windguru does pretty well in the Miami forecast but I don't know how accurate the one for Islamorada is.
http://windguru.com/int/index.php?sc=229
The Keys look like they will have the highest winds per the forecast at points, up to 25 kts.. It is almost all flat water down there with very few beaches. So, it is a different type of riding.
For waves most of the SE mainland should be going off with improving waves likely in Palm Beach County north to Jupiter. Normally I would say to Ft. Pierce but the forecast falls off a bit this time. Tampa and the SW coast can have surprisingly nice waves for ramping jumps off of, better formed and less choppy than some at times off Broward and Miami. Must be all that fetch across the Gulf.
Anyway, there is a lot about Florida destinations and road trip possibilities at:
http://fksa.org/showthread.php?p=14927
and
http://fksa.org/showthread.php?t=2329
Hope you get lots of the forecast wind during your visit!