I completely understand how you want your ex in your kids lives. I look at all the wonderful fathers everywhere who fight for time with their kids and really use their time wisely. My ex fulfills his obligations, but just obligations. I'm cool with it because of course it's what's good for our daughter.
If you ex was really truly moving because he couldn't afford to live here with the child support, I would honestly say go for it. But as we all know, only the rich survive in manhattan, and we also know there are other more affordable boros. LA ranks up there in pricing with Manhattan. So if he is using that as an excuse to run away from responsibilities, there really isn't much you can do. Exactly like Ellie said, you cannot bribe a good dad. You intentions towards your kids are admirable, but the outcome will most likely not be the one you envisioned depending on his true reasons for moving.
Just ponder, what if he takes the deal, but makes excuses for not seeing his children? You in turn get less money, and he still is not present for his kids. You and the kids will lose in that situation.
Like I said, your intentions are admirable, and your kids are lucky to have a mother like you. Just be really honest with yourself.
