What are my chances of getting into UF?

You should speak with your GC. Since you are in Florida there are probably numerous seniors applying to UF every year from your school. Your CG probably has a very good knowledge of what UF is looking for and what you need to do to stand out at YOUR school. Is taking 3 AP senior year considered rigorous at your school or is it slacking off? Do most of the UF applicants at your school take AP Calc? These are things your GC should be able to help you with.

Also, the UF rep is coming to my Ds’s school next week. Check with your CG and see if they are coming to yours this fall they should let a junior get an appointment.