wow, you got some high hopes bro. 1000w uses like 9 amps, wow, that's a lot! you find this out by dividing watts-1000 by volts-110vac, or 1000/110. if you had a inline fan, a/c, etc, the amps would rack up greatly. i, personally, would never suggest 1000whps. shes a hot bitch, you gotta leave the light like 2ft away, 600whps is the way to go. if you want more yield than a 600 can put out, add side lighting, like t-5's.
glass sealed hood reflectors, that air air cooled, are the way to go. i heard digital ballasts suck, not on this website, but all my buddies. IMHO i heard permanent magnet, old school, ballasts are more energy effiecient, and longer lasting. what are the perks that youve heard from digital.
good luck on the cloner, things sound like they're moving up for you, im way stoked!