I'm the same way the night before a test so I scheduled mine in the afternoon so I didn't have to get up super early to write after a restless night of sleep. I think I fell asleep around 4am and was then able to sleep in a bit before I had to get up and get ready.
100% agree, unworld is fantastic. The questions are much harder than any others, it looks exactly like the NCLEX and has excellent rationales. I used Saunders for content review and did a few questions for Kaplan but uworld was my main focus. I passed NCLEX with 75 questions in 40 minutes.