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I picked the D7000 if that means you don't need to buy anything else. The D7000 IQ is better, battery life is better, and I think unless you really abuse your gear it should hold up just fine.
However, if you won't have time to setup on a tripod much, and want to minimize photography gear, I'd recommend maybe a smaller format camera. If you shoot a lot in daylight, something like an LX-5 or 7 would be great. One thing I really like about the premium P&S are that IQ is decent, and you get a lot of depth of field even shooting on large apertures, something that helps a lot in getting higher shutter speeds and still using a nice wide aperture.
Your trip screams to me for a m4/3 system, and if I had that option that is what I would do.