I wonder if the K-lab is the best approach, frankly. It's still a monstrosity to operate, and is still going to take quite a bit of film volume to be feasible.
The "K-14 process" is really nothing more than, dissolve/wipe off the rem-jet, agitate the film in the chemical baths, re-expose in appropriate order interleaved with the chemical baths, then fix it out.
I know that's an extremely simplistic restatement of a pretty sophisticated process, but there's no reason one cannot do it in a sink in a small darkroom. It's probably too much to get done in a changing bag, and the fact that the re-exposures have to occur from both sides without light contamination to the other side is problematic. But I doubt it's insurmountable.
Obviously you cannot fog like the old Ecktachrome where you just took the reel out of the tank in white light. But you can pass in front of some kind of slit similar to the plastic movie processing tanks have. You'd just need some way to do it from each side independently.
Here is the beginning of a K-Lab-2: http://cgi.ebay.com/MOVIE-developing...item45f659cf36