Go with 35-40 watt CFLs if poss. Maximum lumenage is the goal. 3-4 should work well enough for just one plant. From seed veg for about 4-6 weeks (incl. slow seedling stage first 3 wks.) Then go to 12/12. Make sure no light whatsoever enters the box when the lights are off. Don't even peek at them briefly during their night time or it will stall the bloom for weeks afterward. Ultimately if possible I'd go with a 150 watt HPS security style light during the bloom stage. The HPS is brighter and the color spectrum is more conducive to bigger, more potent and tastier buds. The CFLs do work better than HO tube flours and like the above pictures show, should be kept no more than 6-8 inches above the plant tops. But the HPS rules (@ appx. 9-12 inches above tops) in the bloom dept. for best results.