Welcome!
Rehome only with full disclosure!!! He's dangerous, and can seriously injure someone, especially a child, in the face and eyes.
Making him 'safe' will always be relative, and he'll never be safe around children, and will challenge every new human he meets. This bird needs to be dinner for some family, if not yours.
In my experience, 'friendly' cockerels are actually just bold, sizing you up, and when they start maturing, they have no respect for you, and are determined to run the show. The cockerels who are more likely to turn out well are the birds concerned with their flockmates, and it also helps to have adult hens and roosters to teach them some humility as they grow up.
I think it's best to have your cockerels not handled and petted so much; make pets out of your pullets, not the boys.
The bottom line is, this bird will get worse, and you have small children visiting sometimes. How good is your liability insurance?!
Mary