Vanessa, I second the advice to contact the Cenrtel FL chapter of the FL Trail association. They are very active through the winter with hiking trips almost every weekend. Their current newsletter is atL
http://central.floridatrail.org/news.pdf - the transition to hiking season is still in progress so you may find more kayak and bike trips listed right now, but if you stay in touch with them you will start to see more hikes and backpacks as the season progresses. Also in your area is another active outdoors group called Wilderness Trekkers. Their current schedule is at:
http://wilderness-trekkers.org/
whatsnew.htm#Support_those_who_support_us!_ ditto on the kayak/baike stuff. Nost of the hiking picks up around November with the guaranteed cooler weather.
You'vd got some great hiking near you. Hope to see you on the trails some day.