i got my 400 watthps used with a bulb and reflector for 150 no tax, just look around and go to hydropon shops that buy and sell used equipment or ebay im sure you could find a deal, but if you cant get an exhaust then you should get the 150, usualyy .5g for evry watt , but if you take shit serious and havegood nutes and what not you could get it up to 1g for every watt.\
god luck man put some pic up and let us know hows your doin