The D7000 is probably the best DX DSLR from Nikon so far and it's about $1000-1200.
You should still be able to find a new D700 for around $1800. The prices might drop even more since the D800 just came out (which is $3000).
The D700 is still an amazing full frame camera and it's not that much more expensive. It doesn't record video though.
If you really want a full frame DSLR you should check it out. The lenses you mentioned are awesome pro lenses with great sharpness and they let in a lot of light.
You can always rent a camera with some lenses and see what you think of it.
For a beginner though I'd still recommend a good DX camera like the D7000 (or a D5100, they have the same sensor but the D5100 is cheaper). As for the lenses you can check out the Tokina 11-16 f/2.8, Sigma 17-50 f/2.8, Sigma 24-70 f/2.8 and if you need a telephoto lens the Sigma 70-200 f/2.8.
All of those are very very good lenses and they are much cheaper than the high end pro glass. If you're not gonna do it professionally that's all you'll ever need. If you've never used a DSLR before you'll be blown away by the quality anyway (in comparison to point-and-shoots).
You can probably get a D5100 plus all of the lenses I mentioned for around $3000.
And by the way...even if you do decide that you need a full frame body and the pro glass in a few years, you can always sell your stuff and still get more than half of your money back. f/2.8 lenses retain their value much longer and amateur photographers will be happy to take them.