I'm trying to plan a trip for two to Taiwan with stopover in Korea next march using purchased miles from the USAirways 100% match. Unfortunately I can't buy them until 12/20 since I just signed up for the US dividend miles account. I'm seeing availability on and off on the ANA and CO tools but my sense is that seats are dwindling. Am I too late to the party by booking only ~3 months early?? How far in advance should one usually book award travel? Thanks!!