Well I would use high output flouresecents, or one or two low watt high pressure sodiums two cut costs if your on a budget. for only a few hundred you could get pre made hydro kits (hydro farm works well) or make your own for cheaper but it is more likely that a homemade kit will leak or cause other problems. for reflection, black mylar is very cost effective. for cheap nutes look for a 10-10-10 miracle grow (or whatever brand u like) for vegging, 10-15-10 for budding. if u are buying seeds for this, i reccomend a sativa dominant. it yields less but is better for closet growing. hope some of this is helpful.