I'll add that when we separated the flock into breeding groups, it helps that the birds can still all see each other, they are separate but right next to each other. Then when breeding season is done, the flock can reform without a lot of drama.
Having cockerels and roosters together can work...
Welcome!
It's very likely that your pullets and hens will be miserable! Too many cockerels, all trying to mate everyone, not going to be good. It's time to add more pullets and reduce your cockerel numbers, or have a separate bachelor coop.
Here we start with many cockerels, and sift them...