If you can still pick up a new 1D, I'd say go for it. This camera is nothing short of amazing. The frame rate is awesome, the 4mp is a tad short of enough, dynamic range is great, plenty of control, you'll love it.
All the pics from my pbase account were taken with the 1d, except for the coke series, and the flower shots, those were with a f707(still love this camera).
So go here for samples, www.pbase.com/whiskey01
Just try the camera out, the af speed will blow you away.
I mainly use PS CS for raw conversion, sometimes I use FUV, but thats not fast at processing. I use neatimage for noise reduction.
If you need anyhelp, ie lens selection let me know, I know a bit from both systems nikon or canon.