I dont know about where you guys live and how the hydro shops are but where i am you cant really get GREAT deals in the stores it seems like online is where its at. i hate getting stuff online cause i dont want my CC statement reading HYDROPNICS PLUS on it or some shit like that. plus they got to mail the shit to you so youll have to wait for that. I just went through all the crap your doing right now and it is quite a pain in the ass. Ebay has a great store on it that has a 150w hps digital ballast for about 90$ plus the cord sets will be about 20$ plus bulb 40$ reflector, venting. would probably come to a price point of 200 which is where you are at. 150w hps can cover a 3x3 area but ideally your lookin at a 2x2. so if you got 4 plants that should probably work since about half of those will be males anyway unless you end up cloning or using femenized seeds. Just rack your brain and try to think of every possible thing you must take into account for the long run cause it will save you money and time.