I see three problems for you:
1. Residency after divorce.
2. Custody of the kids.
3. Money invested in the property you've paid jointly but which is in her name.
I suggest you find out what you can regarding residency after divorce. I know you can still retain your JFRV after divorce if you have dependents, but not to sure on the details.
As to custody and the property, I suggest you go see your own lawyer who can then draw up a similar uncontested divorce settlement, but with your terms regarding custody and a financial settlement regarding the property.
With regards to the first issue, this is something that really pisses me off. It's way too easy for Tw citizens to attain citizenship of a spouses country AND keep their original citizenship. Meanwhile us married to Taiwanese folk are left at the mercy of unfair laws and the wims of sometimes crazy women.
To be honest, this was probably the biggest deciding factor for me to apply for naturalization. I was almost in the same boat a while back and I was mortified that if I had been on a JFRV I could very well have found myself in the situation where I may have had to leave the country and have my son raised by people I wouldn't trust with...
Anyway, I would suggest you make that a priority. Even use it as leverage that she needs to help you with that or else you wont sign anything.
Best of luck.
World Champions 1995, 2007; Tri-Nations champions 1998, 2004, 2009; Grand Slam Champions 1912/13, 1931/32, 1951/52, 1960/61; Defeated British & Irish Lions 1903, 1924, 1938, 1962, 1968, 1980, 2009
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Don't talk to me about naval tradition. It's nothing but rum, sodomy and the lash.
Sir Winston Churchill
Second of all, as in all honeymoons, all is well until it is not. It is until the unexpected happens that you will see all grievances surface -ask anyone in any relationship. The girl can chew with her mouth open, that if you love her, you do not care. If you do not lover her, if her pinkie toe is half an inch deviant, the relationship is doomed.