As an alternative to the generous offer by Ulysses, check out Florida freedivers. They carry SpecialFins fiberglass fins. The Medium kelpie should work extremely well down there. Depends on how much money you can afford.
Florida Freedivers - Spearfishing & Freediving Gear
You will have to contact them directly to get a current price sheet and a full list of what they stock.
A dive partner had a pair of Bat 25s, which he did not like. He switched to SpecialFins hybrids, in medium, and has been very happy with them.
