I'm fortunate to now have the Trinity of Nikon 2.8s for my D700...now if I can only take pics half as well as you can!
Bill
Bill...you've got the Holy Grail of Nikon glass there...all great lenses. I sold off all my really fast glass when I finally got rid of all my film bodies. For the kind of stuff I like to do, DX is fine. At the moment, I have the 10-24, 16-85 VR, and the newer 70-300 VR. I also throw the 50 1.8D in the bag if I need something fast for low light and zoom with my feet. But most of my shots are at f/8 or more, on a tripod, so I'm in the sweet spot of most any lens. The 16-85 VR gets the most use...great little lens on DX and a very usable range. It has very quickly become my favorite lens ever.
If I could, I'd have the D3s and your three lenses. The D700 is also an excellent choice. It's all about to change within the next year...D4, D900, D400. I'll wait for the D400s before I upgrade my D300, if at all.