I've been reading all I possibly can while collecting materials (tight budget), will be building my cabinet this weekend (2' x 2' x5'). My plan is a 1.75 x 1.75 S.C.R.O.G. 2 plants hydro (dwc) 150 watt HPS, for ventilation I'm going to use a holmes air purifier mounted on top with intake vents in the bottom pulling air through my reflector. I'm thinking about White Widow from Nirvana, looking for a more uplifting high without to much couchlock. My questions are 1. are feminized seeds worth the extra money? 2. Is there any difference between 150watt medium base and mogul base as far as light or heat output? (I can get either one from work) 3. What have other people grown scrog style with good results? Any advice? Thanks in advance.