We went through Irma also, it was more of a flooding event than anything else and we didnt have any damage, thankfully.
For a cat 3 or above, my chickens would be staying put while we evacuate. Count on being away for a long time, the authorities wont allow you back in the area for safety...
@pattyvealey I looked at the map where you live. You are looking at a cat 4 hurricane, possibly a cat 5 by the time it reaches your area.
I am telling you ...EVACUATE NOW!
I went through Hugo in Charleston when it hit there. GO NOW!