AMS isn't too hard but you can't fly direct to AMS in F (CX270/271 direct is served by a 77G)

There's 2J redemption on Tue 5-Wed 13 Apr (or Tue 19 Apr). OK I know mid-week isn't leave efficient but once you ticketed the correct routing you can waitlist for earlier/later flights and rebook for very low fees (1,000AM/US$25).

I even arranged a 4J redemption to Europe (HKG-ZRH/AMS-HKG) for May last year.