Yo,
I was hired by a wealthy, prominent businessman who wanted his family and historical documents published into a book. Through my research, and from his needs, Blurb through the Bookwright Software was the best option. It allowed us to create a book for multiple platforms, physical and digital, and the printing quality was professional. It was incredibly simple and the book ended up receiving far-reaching costumers.
I think you have an excellent idea, and would love to purchase a book of your sketches & thoughts.