Here is the situation:

* We have been married for 17 years and have two kids, age 6 and 12.
* Live in California (community property state)
* I think our marriage is essentially over (no infidelity, just complete lack of interest), and I would leave now except I dearly love our kids, so want to stick it out until they are in college.
* I've tried to keep my wife interested in our marriage, but she doesn't seem interested. (So, my conclusion is after the kids are gone we will go our separate ways.)
* Financially we are doing OK, and both have good credit and are both financially responsible.
* We currently have everything held jointly. i.e. one credit card, one bank account we both put our paychecks into. Only retirement funds are separate.

Here is my question:
* I'm fine splitting our current assets 50/50 or what ever, but I also have stock options in two companies that are currently not worth anything. It is possible that they might be some day though be worth something, and I want to use them to fund my retirement.
* Since I cannot see us staying married (except for the kids), I'd like to get a post-nuptial agreement that says:
(a) to split our assets 50/50.
(b) her IRA/403(b) accounts are hers.
(c) my 401(k)/IRA accounts are mine.
(d) Stock options are mine.

Any advise is appreciated. If you need more info, just ask.