Each case is completely individual. I would suggest that he obtain independent legal advice in relation to both children's issues and property settlement as soon as possible. He will need to attend mediation with the mother before issuing Court proceedings (if this is indeed necessary). He should see a lawyer before mediation so that he knows what his rights are in relation to the child, including name and attending the birth etc, as well as what is reasonable in terms of spending time with a newborn, toddler etc.