I was just about to post a similar question, I guess what your asking (at least what I think your are wondering) is how much will property depreciate by.
From the limited research I have done here and a few other places suggestions of a 20% crash when all said and done are not unrealistic. If I could pick up something with a 30% discount I would jump all over it based on my current limited research!
Good post!!
30% off 190K would land you very close to your target of 120k, so I take that a yes to 30% but no to 20%