Beware overpacking. Lugging a bag full of lenses is a pain in the backside. On my last trip, I took a Sigma 10-20mm, the 18-55mm kit lens, a Sigma 70-300mm, and a 35mm f1.8 prime lens. 95% of the time, I simply used the 18-55mm kit lens. 18mm works for me for most landscape shots and setting it at 35mm works out for panos. It is cheap and, should the worst happen, it is expendable and easily replaced. It is light and versatile. I am not sure what the equivalent lens is for a full frame Nikon though.

The 10-20mm Sigma was great for waterfalls. I barely used the zoom, which was the heaviest, and did not use the 35mm prime. I always thought I would use it in low light but never did.

Don't forget to take a light tripod and spare batteries and a charger. Maybe a tiny flash like the Nikon SB400. And a microfibre cleaning cloth to wipe the lens if it is raining.

Have a great trip.