1. those CFL's and floro tubes will get you though veg cycle. 1-5 weeks. IMO. (keep lights very close, 2-4 inches aways, with a fan blowing)

2. 4x2 closet? how tall?...One 250 watt might be enough. Add fresh air often as possible.

3. I would stay with 4 flowering female plants, at the most.