Other growers have talked about leaves drooping around lights out time. Apparently the plant gets in a rhythm, even Autos.
Roots growing out the bottom is a good sign, strong plant. The roots will die off at the edges instead of circling. Good thing.
A little root bound is fine, unless your are trying to grow monsters.
"Crowding of roots reduces excessive vegetative growth" -Clark (I think)
You are gonna have a fine yield.