I am in the process of making a larger coop out of the bottom of a playhouse. We put in a wooden floor and screened the entire inside of the enclosure with hardware cloth. We used the u shaped type nails to attach the cloth all around. There are boards all around with 1-2 inch spaces in between them. There is also a section at the top - close to where the hens would roost- that is 10 inches of wire - all around the entire coop. The wire covers all the spaces and there are no open spaces for predators. I put them in it tonight and then decided to put them back into their smaller coop which is totally enclosed, fort knox style. If I enclose the coop entirely it will be dark and won't have a lot of ventilation. Any advice on this? We live in a city in KY and we have possums and raccoons. Will they be safe at night in this type of enclosure?