Just a tip for those doing this. It may have been mentioned but I haven't scanned every post so I'll drop it in here.
It was last night we decided to add the last flight. After making the changes I was told all was ok and that the itinerary will be out in a few minutes. My mistake was hanging up there and trusting the process. I logged on this morning (around 9am WA time), as a friend was asking a question, and all of the CX flights had dropped off my itinerary.
Apparently if your itinerary involves CX you should stay on the line and wait until you have an itinerary in your inbox as they have very tight ticketing arrangements where redemption bookings are involved. The staff member on the other end of the phone admitted it was a mistake by the person that had made the change last night and that QFF would've made good on the original booking. I would hate to be relying on that, hence my post here.
STAY ON THE PHONE UNTIL YOU HAVE A NEW ITINERARY IF CX IS INVOLVED!!!!!