One of the questions that you have to ask yourself is; What do I want for my son?
Since you want him to have the ability to communicate with others, get him early speech intervention. The earlier you get speech therapy for your son the less trouble he will face when he gets older.
Another aspect to consider is; is he going to learn ASL, speech, or both. If you wish for him to learn both and wish for him to be successful in both aspects I would recommend that you teach him some speech first and ASL later because I had a friend when I was younger and she learned ASL first then got implanted and struggled learning how to talk.
If you are considering getting him assistive technology like an implant, get him used to hearing new sounds now! Just get him a hearing aid or something to get him accustomed to sounds. Play games like, did you hear that? So he can learn how to pick up and process sounds around him more efficiently with his implant.
Don’t be scared to research all of the options out there for your son.
Best of luck.