I don't know about regular photos, but I am growing 4 auto's under 2 45w (6500), 2 45w (2700) and 2 40w (multi 5000) cfl's.. They are doing great. So, I think you should be ok.
I am growing a Polar Express Auto right now that started out like that. It stayed really short and compact for about 3 weeks. Then it shot up from there. When it opened, it was full of hairs. It is now over 3 ft tall, and covered with flowers.