I would say 65w Flouros would be ok for seedlings for just a brief period of time..other than that, they are really weak.Air cooled hoods are a must almost anywhere you live..Heat is probably the biggest nuisance in any grow room I've ever encounterd! Build your self a 6x6 or buy a grow tent...AC unit might come in damn handy!! I have a portable 14,ooo btu unit that is basically a heat pump..provides cool air in the summer and heat in the winter..best 550 bucks I ever spent,plus I get all the Free distilled water I need to run in my Humidifier,as I live in an Arid part of my state.Living down south, you just need to make sure you have Fresh air coming in, and stale air going out, to keep any mold issues at bay..keep your air flow moving at all times.74-76 degree temps are Ideal when lights are on..dont let your lights off temps drop to much either..68-70 would be perfect when lights go out.