I think Mqqn covered the highlights of my thoughts. I know it ca be difficult, my wife has a condition which basically places the same kind of restrictions on her.
It's new to us though (she was actually a travel writer and thats where she met me to bring me back to the states and now just can't do that kind of thing now, and it's been a hard blow as you can imagine.). We have been trying to get used to the idea that there isn't a "after this" in our future ad learning to work around it.
I think your this sounds good, but always plan not to make money for a while in any new venture. Importantly I think it sounds like something you could do, and maybe would want to do illness or no, so I'd say try it, it's always worth trying something you want to do.
Rebecca now works for herself as well (still writing but more providing ghost and copy the writing novels and travel books though she does still plan to write the novels) and she has been earning more then healthy old me for a while, so there it is possible to "make your own job" as it were, and she wouldn't trade it now either.
FYI she knows a lot about the publishing/self publishing world and divide and might have some info if you want me to ask her something. You info looks right to me, the big advantage of self publishing is you can keep more of the money, ad control, the downside is distribution but with ebooks and the internet taking of the way they are a lot of writers are finding they dot' need that anymore. Rebecca was telling em a story the other day about a novelist who chose not to accept a offer forma big publisher after her book got good internet sales because she was making more then they could offer her and as an ebook she didn't need them. Kinda cool. although as someone with writing hops myself ad someone who doesn't use online media but for a certain knife forum it makes me think my own prospects are somewhat. Ho hum.
I'd buy in just for your pictures anyhow,
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