Hello! My boyfriend & I finally finished building a coop & run! This is a large coop that is 12ft x 5ft wide, and 6ft tall to the peak. How many chickens can it hold? Is there anything I can add to it to make it.. better? The door/entrance is removable. Edited to add: The coldest it gets in my area is about 40 degrees Fahrenheit, the hottest is about 110 degrees. Rainfall is minimal & no snow. Not sure if this information is required for tips on how to improve my coop. Also: Predators are not a problem, the coop is inside my fenced in back yard along with my bunnies who've been there for about a year with absolutely no harm.