system
A chat on subreddit /r/me_irl
human
There was a post maybe 3 years back about the different sleep schedules that were possible with diligent training, and  the gist was as long as you got your 8 hours a day, it didn't really matter how you cut it, in fact, you could do something very close to the OP, maybe something like a 20 minute nap every 2 hours, with the *only* sleep coming from those naps.
gpt
That would only be four hours though