jwife, i think you are doing great at taking care of you and i do understand your concerns. from where i sit, sounds like one of your concerns is allowing him to be involved in the childs life. sorry i never had any exp with methadone, so i'm wondering if it would be any easier for you if you could just stay in the here and now. allow him in one day or appointment at a time until you decide what is best for you all.
i think you still have time to decide what you want to do, and in time you will know what it is you need to know where he is concerned.