The 70-300 is a really good lens, especially for the money (& on your DX body will give you equivalent 105-450mm) You could later add the 16-85mm if you needed something wider. It's another good lens which is about to be `upgraded`, so the current version should drop in price soon.
If you wanted just a single lens, there is always the Nikon AF-S VR 28-300mm 3.5-5.6G ED
I guess it boils down to what you want to photograph (mostly) & your budget.
btw,He who dies with the most toys, WINS!Nikon D800E & D700 bodies + Nikon 200-400mm F4 VR1, 50mm F1.4G, 16-35mm f/4G VR, 105 F2.8 VR macro, 70-300mm lenses. A couple of filters, Giotto tripod & ballhead. Lowepro Slingshot 302 AW