Hi I plan on building a stealth grow area in my closet. It will be 2x2x7 or 2x3x7 max. I would like to use a HPS light and some kinda of hydro setup. I also need to workout the ventilation. Im not trying to spend a whole lot of money but im also not trying to cut corners. I could really use some help with choosing the right size light, best hydro setup for the size of this grow area, how many plants I can get away with, and any other helpful info that will get me started.