Britman - Not booked the flights yet so could stop over in HK, but it'll probably be Abu Dhabi or Singapore from the airlines on my shortlist.
SL - My dad has a Sigma flash, not sure what model he has though - will have to have a look next time i'm there, the reason i was looking at the Nikon flash is I know it can be used off body and triggered via my on body flash which i thought could come in handy (my dad's sigma doesn't work like this), my camera doesn't have a TTL port so firing a flash that way would be out, and i've seen what can only be described as hotshow extension leads which have potential , they aren't too expensive and if I get a cheap flash they look even more appealing and pocket wizards are out for price and overkill reasons

Lots of food for thought here, thanks guys
