That is really cute! Bonus on the front being open! Is there any kind of door? or is it all part of the run? If it's all part of the run, I'd suggest putting an anti-dig apron around the base of the coop.
Where are you located in general? Climate matters. For instance, I'm in Texas and my birds would cook in there. Is the front of the coop open?
ETA: Just saw that your in Florida, my bad...