Hi
The girls will be fine with no roo. One of them will become queen so you don't need a king.
I would suggest you re-home him and if you still want a roo find a breed type that is not so aggressive. Cochin roos for example are nice (mostly).
Why would you re-home a person-aggressive rooster?
His behavior will be bad in his new home too.
He could make someone an honest meal. Sounds like it will be the best thing he has done.