Late April is still a long time away, at that price. What is the current apparent load factor (guess from the seatmap) vs inventory? Is the flight inventory bound (probably)? I think the first step would be to see if the price will drop, and then probably use cash if it does. 62k miles against $850 is not a great redemption but also not terrible. It should be 56.7k UR to buy an $850 cash ticket (1:$0.015).