To the original poster, I would suggest that you separate all of the roosters, then add one back to the pullets when they start laying. Adding a rooster is an easy integration. Pullets with immature, but randy roosters is a mess. The rooster is often bigger than the pullets and without bigger birds, often times turns into a bully, and can be quite mean to the pullets.
I would also recommend making a real effort ASAP to re-home as many of the roosters as possible, it would not be realistic to expect that many roosters to get along. Wishing just does not work, many on here will recommend culling them, not because they are mean or heartless, but rather, from prior experience, roosters are a crap shoot, and can go from the darling to the nightmare in a moment.
With roosters, you need a plan B set up, and ready to go, a way to separate fighting roosters, a place to put them when you do have them separated.
As AArt - a respected poster here, often says, roosters are where the romance meets the reality of chickens.
I would not expect that many roosters to work for the long term. And they will need a fair size set up.
MRs K
