Tyler,
I too am in Orlando and prepping for first hurricane with my flock of 9 20-week old hens & 1 roo! I have a mobile coop that I built so we rolled it into 1/2 of our 12'x16' pole barn/shed that has already survived 4 hurricanes with no damage. Since the shed has a dirt floor and we are already pretty soggy from non-stop rains over the past weeks, I put down about 3-4 inches of pine shavings to give them a drier walking surface. My flock is a bit confused and fidgety, but I gave them extra snacks (mealworms/veggies) to distract them. I will not close the big door on the shed until Sunday when the heavy rain/wind moves in so they aren't in the dark any longer then necessary for safety.
My neighbors have a flock of silkies which they moved into their garage, but I only have a carport, so shed was most secure place I have.
I'm sure we will be okay, latest track further west will reduce the winds in our area, which is good. Let us know how you are after Irma passes.
Debbie