You wont get IS in 50mm primes (not for Nikon F mounts). 50mm f/1.8D is a pretty good lens. Do your research though.
Its upto you to decide on kit lens. I didnt get it. My guess is, after few weeks, you will get to know if you need longer or wider lens.
For telephoto - 70-300mm VR seems to be pretty good. But there are others too. I dont know much about the longer focal length lenses.
I got D7000 and 50mm f/1.4D few months back. I am tending more towards wide angle. So might get Sigma 17-50 f/2.8 in few months.
Others on my list -
Sigma 10-20mm or Tokina 11-16mm - I might not buy these but rent whenever I need
Rokinon 85mm f/1.4 - This is pretty tempting as I am interested in portraits.
Nikon/Sigma 105mm macro - Plan to get this once I get some more related stuff. This might take a year to year and a half.
PS: Remember, macro lenses are also pretty good for portraits.