Welcome to BYC. Glad you decided to join our flock. TwoCrows has given you some good advice. Too many roosters will be very physically hard on your hens; over-breeding them, biting and plucking the feathers from their necks and backs, battering them, and potentially, seriously injuring them. The only reason you really need a rooster is to fertilize eggs for hatching. I currently have 25 hens and no roosters, and I get loads of eggs without all of the aggression, fighting, non-productive mouths to feed, crowing in the middle of the night, and over-breeding and battering of hens that goes along with having roosters (especially too many). My hens are stress free and are enjoying life without roosters around. Please feel free to ask any questions you may have. We are here to help in any way we can. Good luck in re-homing at least two of your roosters and getting some more hens.