Help in selecting UW gear

I need help in selecting UW gear. I have a Nikon D2X, Nikon D100 and want to get a Nikon D80 for UW use. The D2X Housing is to costly and the D100 is not iTTL so that's the reason for the D80. After visiting the ikelite website I want to get the dome ports as I have a nkon 17-35mm lens and a nikon 18-70DX lens but am not sure which one is better. I also want to get one possible two ikelite 125 strobes so I can shoot ittl. Should I build on the nikon D100 and get better equipt and a good macro lens and shoot manual or get the d80 with the lenses I have and only 1 125 strobe? Any help in setting up a system with the proper parts would be appreciated.

I would get the D80, it seems to be a lot better than the D100. The 17-35 is a better lens, but I am not sure if Ikelite has a port that fits it, you should check the lens compatibility chart in their website...