I did a 5am to 1:30 for about 3 years. (really 1pm because I took my 1/2 hour lunch at the end of the day) If you're not in bed by 10 you're hosed. 10pm to 4am is only 6 hours, although I'd get up at 3:45 and out the door by 4:20. Some days I'd go to bed at 8:30 and I'd shoot for 9pm as latest so I'd get almost 7 hours.
I liked getting up early on my days off. The farmers markets were a lot less busy at 7am which still gave me time to make some tea and other essentials for Saturday morning...
And Sunday morning walks/rides/drives before everyone gets on the road is nice.
Big tip is don't stay up until late on Friday/Saturday or you're hosed for Monday. Yeah, it means hitting the bar during prime time is challenging, and sports events are recorded. I'd still do concerts and stuff on occasion but I'd take Monday's off sometimes too if I was doing a late weekend to get back in the early swing.