Sorry about the misunderstanding. I was going on the following quote in your post: "If I find my son will not benefit from cochlear implants, he will be enrolled in an agressive ASL program immediately." I am glad to know that you have started to expose your son to sme simple signs, but encourage you to use those signs when conversing with the other members in your household, and not just when communicating with your son. In that way, he will be provided an environment in which he sees language being used as a communication tool in the same way that a hearing child is exposed to the oral communication of other family members. It allows him to learn through observation, and that is the most natural envirnonment for language acquisition.
Let me clarify: a CI is an assistive listening devise. HA is an assistive listening devise. Yes, there are some differences, but both merely assist. Idid not mean to imply that they are identitical, merely that they are both assistive. One more technologically advanced than the other, to be sure, but still only assistive.