Ok, I have to admit my first reaction to your post was "Oh He!! no!!
I actually can't believe your father suggested this.
First of all - you've already established that he doesn't HAVE to move to L.A. - he could simply move to a less expensive area of NYC. So the bottom line is, he's moving because he WANTS to, not because he HAS to.
Second - if he stays just because you give up support for your kids,he'll just look for other ways to cheat you as well. As for the deferred payment - he's not going to have the money when the time comes. You'll have to spend money to take him to court. And you would need to have a life insurance policy on him to pay it off if he died.
Third - you can't force or bribe him to be a good father. It's sad for your kids but bribing him to stay in NYC is just going to generate resentment and doesn't ensure he won't just drift off from his fatherly duties anyway.
