Maybe nobody knows exactly how hot's too hot. For me, I try to keep the room at about 80 degrees. A few degrees either way doesn't concern me. A five degree swing makes me worry a little & make changes to change the temp. I would be very worried at 87 degrees. A fan can help bring temps down a little, but it also takes down the humidity. Since you're in FL, taking the humidity down some may not be a problem. Good luck & hope you get your AC back soon.