In my first grow I flowered my plants at 7 inches and they didnt even get to be a foot tall when finished. I only had two plants an havested 13 grams from them in total.
In my current grow I am still vegging my plant and they are showing preflowers So far I only have 2 confirmed females and One more I think will be female. I will be vegging them till at least 14 inches this time. I was only using flouresents last time 6 3 foot High output T5 linear tubes. In my current gorw I am using those t5's plus a 150 watt hps.
That is my experience and I lerned alot from it, Hope iut helps man. Happy gowing
p.s get those boy outta there. lets hope they didnt pollinate to heavy. and if so then you will lots of seed for next time but the bud will be kinda bunk