Yes I would recommend taking a US history and another specialized (by region, period, or theme) as DE if they’re available.
Typically top Humanities/Social science students would take Bio/Chem/Physics (or the reverse with physics first) then AP Environmental or AP Bio. You’re in Florida so Marine science is a common choice followed by AP Bio. I don’t know whether you’d be penalized for not taking physics (doesn’t need to be Honors -can you access the class over the summer via FLVS? Or just keep your fingers crossed, considering Marine science is often taken in Florida v.other states?
If your HS average is 1160 you need to aim for 1400. Use Khan Academy going over mistakes till you know where each comes from and can do this type of questions several times in a row correctly.
Would you qualify for the National Rural and Small Town Recognition Program?