Your attorney should have more facts at his disposal than you have recited here. He is in the best position to advise you on this decision. If you have questions that remain unanswered you should address them with your counsel. You should ask him what are the options and what evidence will be required to reach those options. He should be able to provide a budget required to present the case for those different options and his view of the likelihood of success. You get to decide which option you will choose to pursue.
Sign up to receive a 5-part series of useful information and advice about child custody law.