Be sure before you purchase anything you discuss this with a lawyer first. Even with mediation don't you still go to court? Not only do you need to consider the legal implications, but you need to be aware of how things look in court. Also, most financial indicators point to housing prices adjusting lower. If I were in your shoes I would consider hanging out for awhile and renting (taxwise I believe in most states you have a year to reinvest). Another thing, does your husband have a pension? If you are in a 50/50 state make sure get half of that...
I remember having horrible dreams like that too. It's a bad feeling. Divorce is super painful and stressful. One thing you might consider, if you're not currently doing this, is talking with your doctor about low dosage antidepressants. A large number of people I know do this during the first year or two of divorce. I typically don't like medication at all, but I went on 10mg of Celexa after a few months into the divorce and it helped TREMENDOUSLY. The funny thing is I didn't think I needed it. I felt pretty positive, but the AD's seemed to even out the ups and downs, and helped me stay clear and focused.
Hang in there sweetie, once you let go you'll be sad for awhile, but then you'll notice the world looking brighter.... and full of exciting possiblitiy!
There is no arriving, ever. It is all a continual becoming.