I Have 8 Chickens In A 5x5 Coop The Have Allday Acess To It And Their Run From 5:30-10:00 The Run Is 15x18. Is The Coop Big Enough To Have More Chickens? Because I Have A Roo And Im Thinkink About Buying Some Breeders And Show Chickens Is There Enough Space For More Than Ten But Less Then 20?