OP,
Nullis said it best, re vegging is done after colas and some buds are removed.
I would guess you have to leave enough foliage for the plant to be able to use the 24 hour light phase.
as for goin Hermie, I think that is a strain defendant character.
Im a noob and I have done "everything wrong" and out of twenty original plants culled down to my 5 females,
I have yet to cause a hermaphrodite.
I germinated 20 seeds on July 9th, I'm flowering the second female now, the other 3 remain in my veg space.
thats over 5 months old in my Veg, I've almost killed them twice by being hospitalized.
my GF only had pre made food for my Flower tent.