I'm new and my husband just finished our coop and run. we have 12 chicks from 3 to 4 weeks old. Our coop is 4x8 with a root and 7 nesting boxes. I plan on DLM the bottom of the coop but I have know idea what I need to do in the nesting boxes, Help please. also is a 4x8 a good size coop for 12 birds, our run is about 240 sq ft.