i would reccomend going to 12/12 if you dont want huge plants....some plants tripple in size during flower stage so if u want to try and stay compact i would say... go to 12/12 , put ur lights as close as possible to ur plants...(if it doesnt burn ur hand), ur plants will be fine..but monitor until u get the right hieght...last just watch them till they sex i guess ..its all pointless if u end up with males