I assume you're looking for an RV site? You shouldn't have a big problem for areas north of I-4, but don't delay any further. You might want to narrow down your potential locations. I'd use RV Park Reviews.com to research possible RV parks in the areas you're interested and then start calling.
http://www.rvparkreviews.com/regions/floridaLook for cities/towns along the left side of the page or use the map to zoom in on areas of interest. Good luck.
Check out Olde Mill RV Park in Umatilla, FL. Also, check around Bushnell, FL for possible parks.
We're leaving this coming Saturday for a 3 month stay north of Tampa along the coast. We made reservations on our site last February.