Oh you are planning to go to Nepal so soon... would you not need to wait for your Travel Documents? From what I hear, if you go abroad without your Travel Docs or Advance Parole, then you might be seen as have abandoned your GC application. Furthermore, due to the mad rush to meet the August 17th deadline, the lawyers are not sure when the EAD and Travel Documents will be issued. Usually you get those documents within 90 days of receipt date. Not exactly the answer to your question, sorry, but I am curious to know what you and others think/know about the above subject.