Yeah that's what we did last time and the black roo was the one we kept. Since they are all Mutt's it's hard to choose. We really only want an egg laying operation but seem to be always one step behind. I have a couple home selected for a couple of the boys and I will do my best to place a couple more. As of right now they all seem to get a long and have a good pecking order but I know as soon as the hens come of age or the younger roo's do I know there is going to be trouble. We just can't seem to catch a break when it comes to picking our chicks.Well you are right I can see 4 roosters right off, maybe 5!!! But you need to consider soon what to do with the roosters. My advice......pick the one that is most like what you are trying to raise and get rid of the rest or put one back in another pen just in case anything should happen to rooster #1.
You do not want to allow them all to run with the hens, it is just not humane [again my opinion and advice] the roosters get way too hard on the hens as they mature.