It kind of depends on the birds, everyone is different. Your best bet is having them where they cannot see the girls that will help keep some of it down. I have four boys together that have been raised together since they were chicks, have never been separated. They are pretty good together, but they do fuss at each other once in awhile, with some sparring. I am keeping an eye on them tho in case the sparring starts to get serious. I imagine however once they are separated into breeding pens I may never be able to pen them all back together. I know with some you can and some you can't, again depends on the birds.If i put the extra roos in a roo only run...will they fight each other or be ok until i find more hens to add to the flock....I can do that with a breakdown run we made when i raised quail...I just rechecked the date I got these babies there so so big but not 6 months old yet...only 4 months old...
Seriously tho you really need to think about just ditching most of them and just keeping the best one or two. Your life will be much easier down the road and your feed bill much lower.