yup golden comets are sex linked, they are also good sized birds with excellent laying abilities. That gives you a chance do both eggs and meat with the breed. It's a RIR x with a RIW.
Also I was thinking this would be highly effective in golden comets and other sexlinks. When you hatch out u will immediatly know who to caponize giving you a wide range of meat and layers quickly.
Benzocaine with an antibacterial is available at all walmarts. it will numb your bird and help sterilize. I don't know anyone who does numb them but u can.