Make sure the black cumin is Nigella sativa - some things out there which are referred to as black cumin are not the real blackseed oil.
Oleander has had very good success against leukemia and I would think that continuing a good diet and lifestyle and adding oleander would be a good plan. I would suggest two to three months of daily oleander at the normal dose amount and then backing off to a single dose every other day, given the very low Stage 0 diagnoses.
Two other items I would consider would be a good bioavailable form of curcumin (see LEF or turmeric-curcumin.com) and Jon Barron's Blood Support. If you look at the ingredients in Blood Support:
A proprietary blend of all organic or wildcrafted
Yellow dock root
Oregon grape root
In a base of 45-55% pure grain alcohol
you will find some very good blood cleanses and pretty well known cancer fighters, especially among longtime herbalists. Compare that with the cancer tonic of fifth generation master herbalist Dru Browning's and you will perhaps see why I like his product a lot:
How is his throid function now? Iodine with accompanying methylselenocysteine (the best cancer fighting form of selenium, and selenium is a must co-factor for iodine utilization) might be a good idea.
Finally, if he is not likely to do a prolonged cleanse (it actually only takes 5 days), then it would probably be a good idea to periodically do milder cleanses and take extra measures to keep the liver protected and the bile ducts open and flowing, such as:
I'm guessing, perhaps wrongly, that coffee enemas might not be all that welcome either?
Doing those things and continuing a healthy diet and lifestyle will likely hold him in good stead for a long, long time.
I have heard lots of good things about the Dr. Schulze products and programs but am not really familiar with all the individual ingredients. Which ones are you referring too?
I am aware of a few of my members who have used Poly MVA. Though I note that there are good reports of it's effectiveness, the members came to the group because it had not worked for them. And it surely is expensive! Then again, not all things work the same for all people.
Did you happen to see this:
Also, my looking it up reminded me that there are some good posts in the Leukemia support forum such as the one on Grapeseed Extract.