Looks like you should use pandoc (or asciidoc) from within your favorite text editor (e.g Visual Studio Code, Atom, ...) Using raw LaTeX is wasted effort IMHO,

Looks like you should use pandoc (or asciidoc) from within your favorite text editor (e.g Visual Studio Code, Atom, ...) Using raw LaTeX is wasted effort IMHO, only commit to it, if you really need it. If you want to sell later as E-Book, i recommended to get the technical details right now. This might give you an edge over authors who are only able to deliver a converted pdf.