Here's a link for the Ocala National Forest Camping Areas.
You may find it helpful
http://www.forestcamping.com/dow/southern/ocalcmp.htmI also know of a place that is an abandoned sanatarium near the forest that you can camp in.
It's haunted, and legend has it, that if you camp there, you will die within one year.
I've got a month left to go. So if I die by Christmas, you'll know the legend is true.