I would say budget ballasts (check for RF noise, am radio, before mass ordering, digitals should cost a bit less in power) bare bulb vert dangle (to save money and time), Insulation, fans and big ass fucking industrial A/C's, budget should be well off fucked by this point, and you'll need more money for all the timers, light sealing, separation, pots, soil, nutes, meters. 1000 vs 600, Well, That's your choice. 600 will not run the risk of crazy messed up burns quite as bad if your not paying attention for a little and dont adjust the shit.