No way no how should you keep the human aggressive boy. A pain to keep, sucks the joy from having chickens, and a potential liability and danger.
I would probably give the other rooster a chance to see how he behaves being the only boy. But if it's not working out, get rid of him and try another one. Lots of people try to rehome their friendly roosters all the time.
Yes, this.
I happen to have a too-nice-for-the-crockpot gentleman up for sale right now.
