My brother is moving to Sydney (for good) soon, and next year I intend to visit him. I've read a lot about the xONEx fares (Thanks to FT

^ ) and I'm thinking of treating myself to an ex-GIB or ex-WAW DONE4 rather than a boring old LHR-SYD return. I'm not a regular business class flyer, in fact before this year I'd never done so, but after CX LHR-HKG and BA SFO-LHR I'm now reluctant to tour the world in economy
If I do this trip the 4 continents are going to be Europe, Asia, SWP and North America, in that order and I'm thinking it will be 2-3 months long. The only genuine
requirement on the trip is to visit SYD. Everything else is a bonus. That said, I would like to revisit SFO, go to Las Vegas and avoid New York. Other than that I'm after maximising BAEC miles, doing as many flights as I can, and avoiding overland sectors -- I don't drive, will probably be travelling alone and am not
that adventurous... I'm a big fan of cities, especially ones with lots of good pubs ^
In my head I've got ideas of visiting Singapore, Tokyo and Hong Kong; Melbourne, Sydney, and Auckland; San Francisco, LA, Las Vegas, Seattle (looks difficult though) and Boston. In Europe I've no preferences, DXB sounds good though. Basically I'm kinda throwing this out there to let FTers suggest where I should and shouldn't go

My first draft looks like this:
(GIB or WAW)-LHR-HKG-SIN-NRT-MEL-SYD-AKL-SYD-SFO-DFW-LAS-LAX-BOS-LHR-DXB-LHR-(GIB or WAW)
To my shame I've not run it through the validator

(actually the link in the FAQ gives me a 404 error) and I know I've not got 20 flights there. Please help, denizens of FT - any recommendations gratefully received!