I'm starting to stress over the size of the coop we purchased from The Chicken Coop Company. It has arrived however we have not assembled it yet. Our girls are 3 weeks old but I want to give them a nice home. The nesting box dimensions are not listed, however I have a hard time 6 girls will fit in there comfortably. Did I mention I'm STRESSING OUT over this?? Please someone let me know your thoughts... We will be putting this inside a rather large dog run to give them extra run space as well. Thoughts?? http://www.chickencoopcompany.com/products/the-silkie-1 "Over six and a half feet long! 77 61/64 x 29 17/32 x 40 35/64 inches"