If you can’t afford another loss stay where you are at… since you can afford it. Anyway, that seems logical to me. Maybe it will come back and you don’t have to take a loss anywhere? If it doesn’t that probably means you would have been hosed by your plan “B” too.
Otherwise, make a clean break and don’t buy the bigger house until you can afford at least another 10% decline, or more, depending on how things look at that hypothetical future time. I would think there has got to be somewhere in the ball park of a 50/50 chance that the new home you buy goes down by another 70K or more.
