Roosters fight over hens. If you want to have a rooster flock you have to keep it separate from your flock of hens, because otherwise your roosters will fight each other and your hens get overmated. Are roosters legal where you are? If you want to keep all of your chickens, I would recommend keeping them together until you reach the hormonal teenage stage, and at that point separate them, unless you have all roos, in which case you can just give them a bachelor pad and order some sexed females. If you want, once your sexed chicks are mature, you can choose a roo (probably the calmest one) to integrate in with the girls. In that case, you probably want 6 ladies with one roo, or more ladies.