In general, the federal IRS and Florida do not tax compensation for a personal injury. The only type of settlement you need to pay taxes on is punitive damages. Tax laws exclude damages, but the damages need to relate to physical injuries. If emotional distress caused you to lose income, you have to pay taxes on your reimbursement.
Since many of your damages stem from a brain injury, you do not have to pay taxes on the money. Still, the IRS may try to find other ways around the tax law. If you get a high-value lump sum, you could find yourself in a higher tax bracket.