Using hardware cloth for the floor of your coop is a bad idea for many reasons, but first and foremost, for the safety of your chickens feet, I'd put something over that.
You added some info I think as I see now you did have ventilation put in, and there's a decent explanation of how you built it.
You added some info I think as I see now you did have ventilation put in, and there's a decent explanation of how you built it.