I suppose the only other thing I would take is a GOOD technical book on photography for the flight. Immerse yourself, if you're a little unsure.
Other information you could obtain from
www.photoforum.com before you leave, if that is soon, jump on and ask away with those guys, they may also add to the tips etc, as well as suggesting interesting places off the beaten track.
FWIW when we were in Russia at the beginning of last year I took a D70 with zoom and a 503 cw blad with 80/120 mm lenses and they were sufficient. I had both film (B&W and Colour trannies) as well as 5 gig of cards. If you also take digital, take the cards in 1 or 2 gig capacity and then if there is a problem, you don't lose all of the images. Mind you, I also took the laptop and downloaded each day and then transferred onto a dvd.
michael