Hi Gin,
I totally understand you're wanting to plan. I am also a planner, by profession, with stage IV lung cancer.
Unortunately, I don't believe there is any set course of action that LC takes. It seems that everyone is very individual. What I did was, as soon as I could, after my dx, was to set up folders for each of my family members, husband, son and daughter that held all pertinent financial info for each of them. I then went through everything with them. I also taught my husband how to do the bills (he had never done them).
As a planner, I definitely felt much better after doing this. I still find that there are little things that I am constantly telling my husband about.
Also, you should understand exactly what your insurance covers and how it works.
Have you applied to Government Disability?
At the beginning, this was very uncomfortable for my family, to hear me talking about these things, as they felt I'd be here forever. I just told them, nobody is ever here forever and everyone should have a contingency plan.
Hope you continue to feel as well as you do and I hope this helps a little.
Joan