So long as OP remains in the top 20% of his class, it appears as though OP is guaranteed a spot at a 4-year university. Florida’s Talented Twenty program guarantees that students in the top 20% who apply to at least 3 Florida publics will receive a place at a Florida public (not necessarily one of the publics that was applied to). And if OP was eligible for an SAT/ACT fee waiver, then OP receives fee waivers for up to 3 or 4 Florida publics, per the state.
Combined with the Bright Futures program (assuming OP has 100 hours of community service…make sure you have this, @jaceclmbia!) then tuition & fees at the public universities are covered. A Pell grant, which it seems as though this family would qualify for, would help with room & board expenses. And as @kevi2900 included in post #49, some of the universities like New College are making it a full ride for Pell elibible students. So for this particular applicant, an experience at a 4-year university is extremely likely to happen.