zhoutong, just to let you know I am currently working on a Bitcoin book that I will also be publishing as an ebook soon.
This shouldn't stop you from writing your own book as our books will definitely be different. There are a half-dozen books on Starbucks, for example. Each of them is unique.
From your outline, it looks like you are focusing on the technical and philosophical aspects of Bitcoin. I focus more on the business aspects. The more information out there on Bitcoin the better.
Good luck.