For a closet grow I think HOT5's would be right up your alley. You almost completely elliminate the heat factor, with just a T5 I would build an inner structure with some kind of vent (computer fan, or darkroom vents, http://www.amazon.com/Pack-Midget-Lo.../dp/B00068ZAII) and an oscillating fan you'd be good to go. Seeing as T5's don't get the best penetration you'd be wise to toss in some mylar.

For the bubble bucket systems I think it'd be best to use General Hydroponic's 3-part system (Florabloom, floramicro/floramicrohardwater, floragrow) with some suppliments (superthrive for vegging, calmag+, a general B1 vitamin) and you're good to go! I'd go with two dual output air pumps.

You're probably gonna end up screen of greening. Sounds like you've got a pretty smart set up imagined.