Well, different approaches work with different kids and some kids are more problematic than others. However, there were a few things in your post that really jumped out at me as problematic. Life would be less chaotic in the morning if all the homework/backpack tasks were taken care of the night before. Clothes, including socks, are laid out the night before and they get dressed before doing anything else. Particularly since your DS likes to make his own lunch, it would be helpful to insist that he packs it the night before as well.
While it may seem counter-intuitive, I think one hour is too much time in the mornings and leads to distractions and beginning other activities which may contribute to tardiness. My children gets ready much more promptly with me than with DH even though I let them sleep in an extra half hour. They have about thirty minutes from the time that I wake them up, which gives my slowest child just enough time if she sticks to each morning task. If they are not ready on time without a good reason, then they may also lose a privilege that day.
