Hey, Skip.
I am saddened to hear of your cancer. I hope you are under medical care with a good oncologist!
This will be a different sort of response to your post, and I AM NOT A DOCTOR!
The best cannabis use for cancer I have heard of anecdotally (personal use reports, not scientific studies) is Rick Simpson Oil aka RSO aka hash oil. I would read all you can about it online - grow heavy indica varieties, learn how to extract with alcohol to make your own.
May I suggest you discuss using RSO with your MD? Become an RSO expert first as the doc will not likely know much about it. This illness is no joke, so I would buy RSO at a dispensary to start treatment, if you want try it, until you can make your own.
Remember, taking RSO does not guarantee a cure or even remission, it works in some people and not at all in others. And, also, if you follow Rick Simpson's dosage suggestions, you will be stoned 24/7 for 3 or 4 months.