Why drop the contempt charges for 25% of the settlement? This will teach H nothing about flouting the general convention and continue hiding bonus money. I say stick with the contempt charges and show him who's the boss.
Can't you work on wage garnishment as a part of the settlement? H has shown that he will not voluntarily hand over unless ordered to do so (heck...even with an order in place, he continues to flout this!) or having his wages garnished.
Another thing that bothers me here is that you are not living in the marital home with your children. I have divorced friends where the mother and the children continued living in the marital home until the youngest child turned 18 years old then the house was put up for sale with the proceedings split between the divorced couple.
