Maybe I'm overthinking this, but do you think it's worth worrying about the timing of coffee/breakfast/exercise? Do you find you're more focused when fasted, or after you've had something to eat? I'd love to try this routine, but I really don't know what it feels like to be "stocked up on willpower" in the mornings.
Yes, the overall routine does matter. Different routines work for different people, but my personal anecdote is that I get up, exercise, eat breakfast, then spend an hour on my projects.