I forgot to mention, with CX I know your options are likely limited booking with miles, but on the TYO-HKG flight I'd try to avoid the 773 (that's the non-ER 777-300 that's fairly common in Asia for high density shorter routes, not the 77W) and some of the A330's as the seats are pretty craptastic, worst case it's only a 4 hour flight, but if you can get one of the A350 flights you'll have a much better seat.