I was told regardless of being PLT on AA and using an Award ticket I could not wait list for any flights on CX. The AA Agent who took my original request booked me on the wrong outbound dates and I cannot get the dates I want nor can I wait list. Same time period that you are looking for....BTW I recently gave up a FC seat for 10-30 because I am leaving a week earlier. Try calling them maybe my vacancy could be for you.