i like the set up, its similar to the one i have, though, i wouldn't use transparent cups, you want the roots to have a dark natural environment in the soil...i would transplant them in a larger countainer...ehat kind of soil are you using?
in my experience no, though males grow faster than females supposedly, but in my last two grows some of the females grew faster and taller than the males
sorry i couldn't give ou a straight answer