If you're elite, you should be able to get there 1 1/2 hours ahead of the flight. I believe the baggage has to be checked by the 1 hour mark, and the elite check-in moves reasonably fast.

Since you're staying over the night before, you *might* be able to go to the airport and get the passport into the system. IIRC, once swiped, you can do olci.

All that will do however is let you use the bag drop line and pick priority seats (if you're not already able to as an elite). You'd still need to have the luggage checked by the 1 hour mark.