OK, how about this; we can do the USA west coast from Vancouver (drive down to Seattle, maybe shuttle to SF and drive to the wineries) Canada east coast and Niagra from New York (also visiting Boston/Washinton etc). Then Bermuda and on to Miami about end of October (still not sure if this improves the weather issue) and drive down the Keys, visit Georgia/S.Carolina etc.

Over to Phoenix, drive about from there, up to Chicago and on to Hawaii via the direct AA73. Then Australia etc. as before, coming home on the Airbus A380 from Singapore.

LHR - YVR - JFK - BDA - MIA - PHX- ORD - HNL - SYD - AKL - MEL - BNE - PER - NRT - HKG - SIN - LHR

Any further comments welcome, thanks to all who have replied, you are being very helpful!