Feel you there. I'm currently out of the country in a first research phase and need to commit to how long I'll be here and exactly when I'll go back to the US to deal with university administrative stuff and see parents (not in the same city, either). (I can't even check my email consistently, so ... gulp.)
We're all in the same boat. So much good luck and sympathy to you - going through major life changes is sucky at the best of times, and when you're trying to make decisions contingent on information you don't have ... argh. Can you sublet for a month to buy some time?
Hugs all around, and good luck all around.