I'll complicate things by playing the rooster's advocate. I have to admit it is usually the rooster lower on the pecking order who is sweet. Now that he is alpha roo he sees his job as protecting his hens and the coop. Considering that he is a bantam you could probably warn kids to stay away from him and don't chase his hens also do not put their face near him. Unless you have babies and toddlers around, he doesn't sound unmanageable. Eventually he will have a run for those times you have really young kids in the yard. Heck, he is still less risk than many dogs.