We have heard this senario hundreds, maybe thousands, of times in the last few years:
If the Bank says it will 2 months; it probably will be 5 months. I have seen a year!
Up to you: If you are patient and really, really want the house; then be patient.
If you will kick yourself for waiting for nothing, and miss out on the deals the next few months; then walk away.
Waiting for the Trustee Sale is not much better; it will 3-5 months until that is Listed too.
There are a lot of houses out there, maybe a better home and deal will reveal itself.