If you'll only be a couple of flights short you could look into doing some mileage runs (or segment runs on WN) to make up that difference. You would probably earn that money back in points by getting the 25% bonus on your first batch of 2013 flights. I'm typically 2-3 flights short of a+ and do 2 or 3 Dallas to Tulsa runs at $100 each to make up for it.