Nikon D5100 Lens, some direction would be nice

I'm planning on purchasing my first DSLR (D5100), but I'm on the fence about which lenses to get. I'm extremely interested in night photography, so I thought Nikon's AF-S DX 35mm f/1.8G lens would be a nice pickup (not exactly sure if it is but I'm keen to listen to your opinions.So my question is do I need really need the 18-55mm kit lens or will the 35mm lens work just fine for me. I know that the lens can't do much zooming but I figured I'll buy the lens if I need it later on. And one more question, how is the 35mm lens in landscapes?
What should I do?

The 18-55 kit lens adds so little to the price of the body-only price that you may as well buy it!
You will then have a really useful general purpose lens to back up your 35mm.

For landscapes you would probably be better off with something wider than the 35mm. On a DX camera like the D5100 the 35mm is the "standard" lens.

I would recommend just buying the 18-55mm kit lens to start with and try a few landscapes with that. You will soon find out what focal lengths you prefer and then you can invest in a prime lens that suits you best - if you find you really need it.

The 18-55mm kit lens is actually a pretty good bit of glass and you might find that you could more usefully spend the same money on a tripod or put it towards a wideangle zoom if you find you need it.

In your shoes, I'd get only the 18-55mm.

It's a great starter lens and you can buy other lenses as you need them.

The f/1.8 35mm AF-S is a fine lens, but its field-of-view is limited to that of a classic 50 mm, since its a DX (cropped sensor) lens used on a DX body, which is usually to narrow for landscapes. Besides, it can't be used properly on an FX (full-frame) body, should you wish to upgrade to an FX camera in the future.

As for night shots, they're not about fast lenses, but about slow and deliberate photography, using average to high aperture settings (f/5.6 - f/22) and low ISOs to eliminate any optical errors such as lens flare, corner softness, chromatic abberation, light fall-off, all of which -unfortunately- are usually most apparent at fast aperture settings. My advice: go for the -excellent btw- 18-55 mm, and invest in a decent tripod and cable release for your night shots. Happy snapping.