I'm here in FL, spent 4 decades of life here, nothing withstands a hurricane - at least, not a serious (Cat 3+) hurricane. Best you can do is build the structure heavy, concrete or anchor it in place, and decide what you are willing to sacrifice. Chances are, its the roof. Which ain't great for the birds inside, no matter what you do.
If you don't frame a wall of ventilation to deal with our heat, or engage in some creative passive air flow engineering, and you aren't willing or able to tolerate predator losses, then be certain to include one or two external nesting bars in your protected run. Much of the year, you will find your birds sleeping on those, by choice, even in conditions we would consider unpleasant (at minimum).