I want to go to sleep.
Just this last thought:
Fly Lax DME 62.5AA in F.
Return from WHR* to LAX F for 62.5AA in F. *=Whichever airport in europe.
For 45k aeroplan you can cover maybe 10 airports in europe (in C) if planned out carefully and pay maximum $200 tax on the whole.
I believe you get much more tachles here.
just adding this HKG, makes it a RTW trip, which isnt needed.
Trains + F is a bit a contradiction, but I guess you will have to experience it yourself.
Flying F is wow, and you are being brought and carried all over, whereas traveling with the train means shlepping (without carriages to drop luggage on) between trains, and keeping a constant eye on your luggage, or it WILL get stolen. Car rental with a good gps seems smarter.