@humanearl,
I feel i also a kind of Owl! But I am trying to take atleast 5 hrs sleep per day! While I am sleeping, I am in a deep sleep, so basically it refresh my mind, and body very well! I think you also try it! Having a sleep is number one concern! Health is the most precious thing for our lives! So, we must keep it at the best!
Cheers~
You are right. I at least try for 5 hours of sleep. I'd prefer 6-8 though.