AsNoriuanswered grow question a year ago in my eyes your statment has 0 ground. early flower is caused by stress, auto plant goes to reproducing , instead of beeing in veg , she tries to create offsprings.
unless you stress even more and your plants stay small, i dont see whats wrong with long veg, my all autos ( in soil ) if made to 6th week of veg were finishing in 200+g of buds.