I think your kids are all old enough to understand what's at stake and how to behave around a young cockerel, what to look for, what to avoid, etc. Have a family conference...this is a teachable moment......Thanks for your kind words.
Our youngest is 10 and loves the chicks the most... I think she is just like me. Henry so far, doesn't pay her any attention. He at least comes near me, but not to her. So, in our kiddos still at home, we have the above mentioned 10 year old, a 12 year old and a 15 year old. I think the only other person Henry gets close to these days is me and he will near my husband only reluctantly if my hubby enters the coop/run with me.
And if it doesn't work out, and you aren't vegetarian, then here's another valuable life lesson...