In my case I have a pension and a 401(k). In the settlement she got the equity in the house and I kept all of my pension. We split the 401(k) with her getting more than half to balance out the fact that the NPV of my pension was more than the equity in the house.
In your case, if you are keeping the house (and pension, if any?), you might consider offering her the lion's share of the 401(k) in order to balance things. Then you don't have to pull equity out of the house, for instance. Yes, you will take a hit in your retirement planning, but rebuilding that will be easier than selling the house, etc.
