If you don't plan to incubate eggs, (either by chicken or in a incubator), you should keep those roosters separate from the hens. I doubt there will be too much fighting between the two roos if they stay together and separate from the girls. I have two in a chicken tractor that were raised together. They spar a little, but I've not seen them draw blood or anything like that, probably just working out who'll be boss for the day. Further, if you'll not be making pets of them, you might also think of re-homing them, just a thought, unless you need them for breeding or pets, they are just extra eaters.
