First, I know you do not need any advice on the weight issue...you have that covered....
On the homeschooling...Research show that home educated children are at an increased advantage over public schooled children in academics, socialization, and social skills....and yes, I do know this--I just did my thesis paper on this very subject! email me you addy and I will send you a copy of my socialization paper, and point you to other research studies that show academics is higher, as well.
The great thing about home schooling is these children are more tolerant, and better behaved because they DO have the parent to correct behaviors right away...unlike in public school, where the teachers are not allowed to punish a child, or have too many kids to single out each bad behavior of the whole class. (not teachers fault)
The other great thing is there are SOOOO many things available to you in Florida, as a home educated student. From home school days at Disney, the zoo, local museums, and more! There are so many great groups (check yahoo groups and meetup.com, as well as HERI, jax4kids.com and just google)
I think is a great thing and i wish you the best of luck!! :) Please let me know if I can help in any way...
--owner of local home schooling group, and currently getting a double degree in Elementary Education and Special Education