I have paid a lot of attention to UF results over the last half decade because I used to live in Florida and my 2 kids went to high school in Florida. Your SAT score is great and will have you in the mix.
Here is the strange part. UF clearly states that class rank is not considered. However, of all of the students I have known that have applied to UF (and it has been a lot over the past 5 years), I have seen no better indicator of whether or not those students would be accepted than their class rank. That is why I am really concerned for you. I hope things work out but definitely have some backup options in the works.