The stems might not get very thick if theres no real air movement blowing them about, so later on ye might have to tie the stems to the roof to keep them from falling over. I know a guy who does the same as you and gets a decent smoke, he swears by creating mini storms when watering, he'll put his plants into the bath, water them first then spray all over the plant, the then grabs the main stems and starts shaking the shit out of them to get all the water off. He's compared 2 plants, one with mini storms done to it and one just watered in the cupboard, the one that had the storms doubled the end weight of the one that was left alone, thicker stems and healthier looking.
If your going to do that, don't put yer plants back under the lights until the leaves and buds have dried off, and stop doing it once they are a few weeks away from the end.