I just love when people keep roosters. I have a rooster only coop/run as well. I have so much fun with my roosters, they have a lot more depth then the hens.
@Batpool88, I agree with @dobieloever, but would add that when cockerels are young, one really cannot tell who is going to be the "good rooster", because of hormones. I would give it some time and periodically test it.
I just love Dahlia. You are correct, she is the most non-judgmental and ready to give multiple options, chicken person I have seen on Youtube.
@Batpool88, do you know what the chickens died of?
I have multiple roosters. Only one has his own flock. The other two are together.