I have two cockerels which I would give to someone for free. If anyone lives near the Bay Area, I'll bring you these for free if you need some new blood and your intention is to breed them.
All of my chickens were brought up in the heat of the light, and as adults they go to roost in their coop at night every evening around sundown, and they wake up with the sun too. I've never had any chickens with their schedules all out of whack.
No, they do not need dark. They will fall asleep wherever they are whenever the mood strikes them. Keeping them at 95 degrees the first week is crucial then down 5 degrees each week.