I seem to have the same problem. Only I think I may have 4 roosters in my new flock of 14. One ameraucana and 3 Bantham. Will this be a problem? I have no noise restrictions
4 roosters are way too many for a flock that size. While it is not iron-clad, a general rule is 1 roo per 10-12 head. 4 roosters are way too much. Later, when you have an established flock with older hens, often times, you can have either brothers raised together in an established flock, or a father/son raised up and do quite well with 8-12 birds, but not in a new flock-mates only flock.
While there is a strong possibility that the roosters will fight, sometimes until bloody or dead, the real problem is that you are going to have a bunch of juvenile roosterrs that are WAY over breeding your pullets LONG before your pullets are ready to be bred. The pullets will have no peace, they will have feathers pulled out, and there will be a huge amount of tension in the flock.
Persoannally I have a theory that roosters raised only with flockmates, tend to be more aggressive that roosters raised in established flocks with older birds. In those flocks, the older birds thumps some manners in them. They are NOT the biggest bird in the flock until they are considerably older.
I would cull all of them, and consider adding a rooster next year, when your pullets are older. An all hen flock is a good way to start with this hobby. You can add roosters later when you have more experience. Roosters take a little poulty experience, because way too often they become nightmares.
AArt - has a good point in that when you have multiple roosters, or really any roosters, you need to have a doable plan on how to separate them RIGHT NOW. They often don't gradually get worse, they go into the nightmare mode in an instant.
Mrs K