I wish I could help you with the custody question. I've come across many couples who find it best if the mother and father live only 1/2 hour away from each other. That way they each get some time with the kids.
My suggestion, and it's only a suggestion because I don't have kids myself, is to sit down with a few real live couples who live nearby and share time with their kids. That way your ex gets a very clear, fair-minded understanding of what works. 800 miles apart doesn't work.
A neighbor in my building has two kids. His ex lives 5 minutes away. They are able to switch kids around within 15-20 minutes. It works for them.
Paperwork and courts are well and fine, but if there's any way you can use other couples to help convince him that being CLOSE is the most important thing to a workable situation. Anything else is a fight that's not worth it.
Give him the real estate example. When landlords buy rental properties, proximity is the most important thing. If the landlord lives in NC and owns a property in NY, it's really, really, really hard to rent it out, fix the toilets, and deal with all the nitty-gritty at a distance.
On another note. You answered one of my questions with:
"i have naturally dislocating shoulders and mine come out all the time. i go to my chiro all the time to get it reset. they can tell and usually do a better job with less pain."
Could you contact me through the Answers email. I'd like to ask you some more advice about dislocating shoulders. Thanks. :)