I have just about finish my first chicken coop. I only have to put in the roosts, the nesting boxes, feed and water. The floor area is about 8ft x 8ft, and walls about 4 ft high around the walls (going to about 6ft in the center). I am guessing that nesting boxes are pretty simple. I have heard that they should be about 15 inches x 15 inches by about 18 inches high. Are there any other tips or advice I should know before making them. Should I put a 2 inch lip along the front to keep in the bedding and keep other poop and stuff out. Any suggestions welcome.