I have a rabbit coop that will soon be vacant so of course this means more room for chickens! Its about 8 feet long and 3 feet wide and 3 feet tall. I would like to use it for small bantam type chickens but would like to know if it would even work? How many chickens would fit? I plan on building a large run for them and they would have a few hours to free range as well. Any help would be very appreciated!