Rachel,
See, you already have so many people here ready and willing to help. Although it sounds like you are in good hands at the head and neck cancer center in OZ, a second opinion is always a smart move that could make the difference between life and death.
As others have suggested, you may want to contact the doctors mentioned at MDA and Dana Farber in Boston. I live in greater Boston and would be glad to help in any way I can.
Best of luck and keep us posted,
Kerri