If you waited for 11 years, do not take risk unless it is emergency. Get your gc filed, Nepal is current. File your 140 and 485 concurrent and apply for advance parole. If employer starts your processing in a month and is willing to help you , in around a year, you will have advance parole and you can travel safely. If employer starts processing this month and tries to slow down as much as possible but actually file your application , you still have your travel doc in around 1 n half years.