You might consider pulling both cockerels out of the pen for a while, or better yet, forever. They tend to mature faster than the pullets, making them bigger, and they can bully the pullets. Two of them on 7 pullets is apt to be pretty hard on the pullets. Pay attention to your pullets - if they start hiding you really need to remove the males.
People often have some misconceptions about birds:
- being raised together makes for life long friend - in chickens it has almost no effect
- letting the birds out for a bit of time will make up for over crowding - no they are not like a dog you can take for a walk. Over crowding causes ugly habits.
- roosters raised together will get along and be nice. Often times they won't.
- todays cockerel's behavior is no indication on his behavior tomorrow.
I would not keep a rooster with less that 7 hens in a full size coop, and I would not keep 2 roosters with less than 25 hens. It can work, but most often it does not work, and the hens pay for it. The more roosters you keep, the greater the chance of it going wrong.
If this is your first year with chickens
or if you have small children, I would re-home both roosters.
They tend to attack children first. Often times inexperienced people do not recognize the aggression until the darling turns into the nightmare. At the ages of your cockerels, you are leaving the darling stage - headed into harder birds to manage in a small coop.
Mrs K