I just posted my latest Kickstarter update. The short version: I changed the order of the stretch goals to put the easiest ones early (audiobook, black and white interior illustrations), then combined the two hardest into one (color interior illustrations and offset printing), and accepted that the hard ones almost probably won't happen. Now I can stop putting energy into overthinking ways to reach the stretch goals, and concentrate on the basic goal, which is not a done deal yet.
Initially I included hardcover printing as a stretch goal, but it never really made financial sense, so I've cut it entirely. If you're one of the people who liked to imagine that for me, thank you for your kind thoughts. One day there will be a book like that. Just not this time.