There’s a debate about whether or not it’s a right for children to be able to hear, especially among those born deaf. My argument is that yes it is a right to hear. Give the children a cochlear implant and send them through a deaf school (or preferably home school them yourself). Teach them both oral language and the sign language for your region. Your child will be better off that way.
What you don’t want to do is cause the child to miss out on opportunities. Let the child hear.