Are you wanting to hatch eggs? Or do you just want eggs to eat? You don't need a rooster unless you want to fertilize the eggs the hens lay so you can have more babies/chickens. If you just want eggs to eat then I would only get hens and no rooster. I've only hens (9) in a 30X40 run and a 7X7 coop (inside a 10X10 shed). It works great