Thank you all for your responses. The CX option seems an excellent idea which will be further investigated. The input is much appreciated.
Gosh-it is such a hard choice, the freedom of a flight to Oz and every minute of the eating and drinking which helped to accumulate the miles to make it possible, was thoroughly enjoyed too!
For idle information, it would seem the Virgin want 160k air miles for the Upper round trip whilst BA require 320k for the F class similar.
Saluatations again. cc