Wow. This one seems like a good problem to have, as problems go. I can answer from 2 different perspectives:
1) Yes, buy the dream house now, while the interest rates are low. As interest rates go up, your buying power goes down - you either have to buy less of a house than your dream house or be willing to pay more for it, in interest.
2) Stay put. Given the uncertainty of jobs don't take the chance that you need to have a 2 income family to pay for the mortgage.
So, there you go. I bet that didn't solve anything. Wishing you the best in making your choice!!