waking up at 4am? (intentionally)

Hi, I wanted to ask whether its "bad" for you to wake up at 4:00 am, and go to sleep at 7:30pm (8.5hours of sleep, i probably function best with this time of sleep, 16yo male,almost 17)

The reasoning behind this is, i want to work on my business before my school, because after school and gym, i feel like i don't have more "energy" for my business and self learning.

Do you think this is bad because of unnatural circadian rhythm or whatever its called? I would also have to workout closer to bedtime (workout at 2-3pm) but i guess I don't have that many options to perfectly balance everything, which is normal.

What do u think?

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