I'm having the exact problem that you're describing. I want to study computer science in a university here in Greece but to do that I have to give exams in subjects that are irrelevant to a computer science curriculum (anatomy,biology etc.) because in High School I was in a "medical" department. So now because I don't want to spend a year of my life studying those courses I can't study computer science in a university and I became autodidact , which is very challenging so far...
Right now I'm reading this book : " The Art of Thinking Clearly: Better Thinking, Better Decision" , so that I can get myself familiar with the biases that I unconsciously do.
Hey. Your plan looks interesting and I'm wishing you all the best with your project on self-studying. If you want to learn about logic take a look at the online courses on coursera from the University of Melbourne : https://www.coursera.org/course/logic1 https://www.coursera.org/course/logic2