Koolau
Give me a museum and I'll fill it. (Picasso) Give me a forum ...
Don't expect to be good at being retired right away; it took me years to properly fall back asleep after waking up after "sufficient" (7 hours) of sleep. Now I can go 8 or 9 with ease, but it took practice!
I was used to getting up at 5:AM but adjusted quickly to waking up when I was fully rested following ER. SO, staying up late wasn't an issue to me. YMMV