i got a strain called kish its a cash crop ken strain. grows beefy and finish flower in 42 days and is a great yielder. on a 5 ft plant 1 lb minimum. also i had astro queen that did better than the kish. and tastes great. have also done A.S.H./ afghan skunk X afghan haze was a massive yielder...
ilovebush has a great point a flipbox is a great little invention. most commercial/large scale growers i know use flipboxes. u dont need all of the lights on all the time, it also helps with heat,i suggest a inline fan that will be able to cool the bulb allowing you to put the light...
my only suggestion is that the 1000 mh in such a small rom might be overkill and too much heat. but all in all it sounds like you have been thinking about this for a while. i got a strain recently that finishes in 42 days its called kish. i have also grown astro queen which is an 8 wk flower...