If you're 17 then my recommendation is to focus on finishing highschool and getting on a good career to study, something that guarantees finishing and getting a jo, try writing or even making an income out of it... your plan D.
Many of the people that make a living out of writing or art... have been doing this for quite a long time if they are not popular, some of us even have more than a decade doing works and our clients or patrons our very first fans or some that came after several years making content.
Making content, promoting it, making exclusive content, stuff that people want and stuff you want to do, all that takes a lot of time and preparation. You not only need a plan, but you'll need a lot of preparation to don't run out of content quickly, and making sure its not burning you and consuming most of your time while making you neglect your responsabilities and obligations.
Two years is nothing, give yourself more time, maybe a decade but even so try to don't destroy your body and health in the process.