I think it's more true a plant triples in size not doubles when it's flipped. Each stran being different, but I would count on it trippeling in size. Let your lower shoots come up and start to b a part of the canopy at least be for you flip. You'll have a monster if you veg a whole 2 months. 5 or 6 weeks is enough to pull 6 - 8 oz your first grow
Some plants are reluctant to show sex in veg, some will, looks like yours will. Just watch