In the event any of you are following this thread, here is an update.
I modified DK60a. No bromide, 200g sulfite, although that gets diluted to 50g/liter with a 1:3 dilution. Add phenidone.
I've only had a chance to run a few shots of Kentmere 100. The results are stunning. If one is using a hybrid system, negatives shot from ISO 25 to 400 are printable. Peel off the extremes, say, 50 to 200 ISO. In fact, the latter is probably the best negative. Grain is what one might expect from that level of sulfite. Not bad.