in an area that small tie her down instead of scrogging, FIM it in about a week and a half and then 12/12 another few days later, it will stretch so it fills the box dont worry. you can keep those as close as 3-4 inches away from the plant, I would add a few more CFL's as it gets larger and goes into flower. So thats about 2 weeks till flower, might as well do 18/6 till you FIM then 12/12 a few days later (once first leaf sets are out on new tops).
Thats what my plan would be in that space, with that lighting, and assuming its definitely a female.