DeSantis has a lot of influence over the FL Legislature (I know people in the Florida SL and I know DeSantis).
That being said, the final map (while far more aggressive than the State Senate maps) won’t exactly be the DeSantis proposed map. I do expect the final map to possibly draw out FL-05 and have a similar partisan lean (18-19 Trump seats minimum), but it will shore up some R incumbents such as Salazar a bit more.
Except shoring up Salazar and Giminez more is hard without making Diaz-Balart mad; the Senate proposals already make his district into a Clinton one. The GOP seems to be betting on the idea that 2016 Miami-Dade was a fluke and 2020 will be the norm going forwards.
Looking at the voter registration trends in Miami-Dade as well as the insane drivel the FL Dems are saying about Florida Hispanics, that’s probably a very good bet the GOP is making.