Just a caution: if you need to make any changes to your flights after the ticket has been issued, you can only "pay" for the changes with QF miles. So keep this in mind when transferring and setting your flight dates. If you don't want to convert any more than the minimum needed for each Concorde ticket, consider having a few of your hotel stays at other properties put into your new QF account. Hilton stays earn 1500 per stay, which is three times what double dipping with US carriers yields.