That sounds like a male sativa bro. Generally females 100% evolve very fast, but not in height, at least at first. Sativa weed and seeds are the only seeds i ever got. But it's 100% certain, but about 90% x) Hope it isn't though.
I think that's enough light for veg. U can always LST and top if they get too big. Another way is to prune so the light reaches the new growth