if by "win" you mean be awarded joint custody, you would ordinarily just need to back up what you have told me here today. Custody orders are made in the best interest of the children. You have two children who you have been actively involved in the lives of for their entire lives. They are grounded in their community, they probably have friends, and Hawaii may be all that they have ever known. It is very seldom in the child's best interest to uproot the child, and move them out of state and away from the other parent, especially when the child has an emotional tie to the parent. I obviously have not heard mom's side of the story, but, based on what you have said, you would have nothing to worry about.
Let me know if I may be of further assistance. Thank you.
DISCLAIMER: Answers from Experts on JustAnswer are not substitutes for the advice of an attorney. JustAnswer is a public forum and questions and responses are not private or confidential or protected by the attorney-client privilege. The Expert above is not your attorney, and the response above is not legal advice. You should not read this response to propose specific action or address specific circumstances, but only to give you a sense of general principles of law that might affect the situation you describe. Application of these general principles to particular circumstances must be done by a lawyer who has spoken with you in confidence, learned all relevant information, and explored various options. Before acting on these general principles, you should hire a lawyer licensed to practice law in the jurisdiction to which your question pertains.
The responses above are from individual Experts, not JustAnswer. The site and services are provided “as is”. To view the verified credential of an Expert, click on the “Verified” symbol in the Expert’s profile. This site is not for emergency questions which should be directed immediately by telephone or in-person to qualified professionals. Please carefully read the Terms of Service (last updated February 8, 2012).