Upload & Sell: Off
Hello... I'm an amateur, amateur, so take my advice with a grain of salt. :-)
I've shot Olympus, Canon, and now have a Nikon D7000. Great camera, and I'm sure it will serve you well. I started with the 18-105 kit lens, which is still an OK all-around performer. Not great at any one thing, but not bad either.
For the wide end, I added the Tokina 12-24... Used for under $300. Plenty sharp enough for my needs, and you can get the older version without the built-in focus motor for the D7000. My son "steals" this lens quite often for his D5100, even though it doesn't auto focus on his body.
For the long end, I added the Tamron 70-300 VC... Not 400mm, but I thought it worth mentioning. I came from a 70-200 L on Canon, and the Tokina does everything I need on the Nikon side. Not in the same class as the Canon L, but it's a great lens... also under $300 used.
The 35 f/1.8 is a great little lens for a fast prime... I picked one up in beat up condition from KEH dirt cheap. Great lens... Sharp.
I'm sure you'll get some great suggestions... Good luck and enjoy your camera.