would be cheaper to just buy the genset here.
solution,,,,,,,, if you don't own a heap of 240v camping gear,(is there such a thing) just buy all your gear from the US,
it'll be cheaper,
you'll make the honour roll in the "flamed for buying from overseas" thread
none of your mates can sneakily plug their gear into your setup
and, you'll be a one of a kind, that's gotta count for