Most of the “South” will swear that Florida is not southern. 
See the UF forum for lot of discussion around UF’s holistic admissions. Basically, about 50% of admissions is based on GPA, Course Rigor, the essay, and test scores, with test scores being slightly less important than the other three (that essay really matters). The other 50% is based on ECs, volunteering, work, etc. UF uses the coalition app, as does FSU. The application fee was $30(?), so if you apply to one, you may want to go ahead and apply to both. I would also recommend you tour both school (and then perhaps continue down south to Tampa or Orlando to check out UCF and/or USF).