My sleep sweet spot is also around 7-7:30 hours. I am typically a good sleeper as in don't wake up etc. On days where I sleep more or lay I I often feel less energetic. Then there are also the cases when I go to bed early and wake up early by myself 'ready to go'.

I also like the suggestion to do the important thing first in the morning. So far I have not found a way to get around the morning chores, lunch prep, kids, dog etc. I know the theory (pre prepare, do it fast, be organised) but doing it is something I need to work on.