His biological father would most likely have to sign off for this to happen

In the end it depends on if it’s a good impact and what you feel about it no one can choose but you

Maybe explain to your son how he’s also your father and wants to make him happy if you decide to

Well how do you feel about it? If he’s a proper father and been there for him sometimes it’s best we pick people who will do proper care for our children and make them happy and you’d wanna see how your son would feel too