They are your chickens and you can do as you wish. I think you are still rather in the romance stage of having chickens. There are a lot of misconceptions that people tend to get from experiences with other pets.
being raised together has almost no influence on long term behavior. They can get...
The more roosters you have, the greater the chance of it going wrong. If they are fighting, terrorizing the girls then adding more full grown hens might help, (adding chicks will do nothing) but there is a strong chance it won't help. Once bad behavior starts with cockerels, it is too late to...