Hey Mmayhemm ,
Are you gonna use unsexed seeds , feminised seeds , or clones ?
If your using std. unsexed seeds I'd def. do a cpl. extra buckets to compensate for the males .

Image Reaper is finishing up his 1st cab. hydro grow as we speak . I think his cab. is 2ft deep x 4 ft wide and 6ft tall and 400w.- and he's lucky to have fit just the 1 g/h power grower / glorified waterfarm in it . Look see -> http://boards.cannabis.com/hydroponi...ydro-grow.html

Plan on huge humidity too , anything over 45% is risky during flowering due to bud rot / mold . I think using the poly for walls will be to your advantage as far as the heat situation , heat will go right thru it unlike wood / particle board . :thumbsup:

Digital ballasts = only 1-2 yr. warranty . No use of a generator , and you need a very clean / constant power supply or voltage fluxuation right from the pole can kill a digi ballast . Keep the ballast outside the cab. to help w/ heat too .

My rooms only 6 ft. tall too . It sucks . = Come dig my basement out an extra 2 ft. and repour the floor for me bro. This is why I chose cooltubes over a conventional a/c hood . I cant keep the lights over the canopy in late flower , if you look at my grows in late flower - plants are on either side of the lights w/ lights dropped well below the canopy so the bottoms of my plants get as much light as the tops and rotate buckets 90 degrees every cpl. days . This - I'm sure lengthens flower time = oh well .

Stinky / Scrog - We don't know if they're using clones or not . Scrog in a confined space is scary . Hard to cull males once woven in the screen . And way hard to do maintence in the event you have to get inside a bucket to screw w/ airstones etc...

Regardless of topped , sog etc... keep in mind 6ft. - 1ft for buckets - 1 ft. between plants and lamps - 6-10 in. for thickness of whatever hood / reflector you choose only leaves 3-3.5 ft. for plants . So plan on flowering early like Stinky said . Indica Dom. will prob. be to your advantage too .

Peace bro.
Crispi :jointsmile: