Co-parenting arrangements have to be handled on a case-by-case basis with the approval of both parents. When either parent isn't willing to negotiate and work with the other one, the situation can become more stressful than helpful. What starts out as a positive relationship may devolve into negativity. How you address these conflicts can determine how things go from there.
If you have a child custody agreement for your children, you will have to plan carefully for travel if you are going to an international destination. One consideration here is that if both parents aren't traveling with the child, you will need permission from the absent parent to leave the country with the child. This must be in written form.
Your criminal defense can include many elements, but there are some that might be more beneficial than others. What many defendants don't realize is that they have to take the circumstances of their case into account when they are trying to figure out what they are going to do about their defense strategy. What worked for someone else won't necessarily work for you unless everything about the two cases is identical.