Get Sandy King's book on Carbro off the Alternative Photography site. I think it is really the place to start, since you can always use a camera with filters and film rather than a dedicated color camera to take the multiple images. Start simple....LOL.

I have also been thinking of using a sliding back arrangement on an 8x10 to do 4 4x5 images, and just hold the filters in front of the lens by hand as I expose for each color. Then cut those up and do carbro tissues from that. ---

Many ways to do this without having the fancy camera from day one.