Hey X man, thats a lot of info and i'm a bit confused but thats probably coz i'm stoned I'd decide on how big your gonna want each room and use the minimum height (the lowest point of the roof) to judge how much space you have to grow in. So if you have a 2 foot wide room and loose 16" (8" per foot)your left with 36". 38"deep x 24"wide x 36"high would be enough room for 6 small plants i guess. Because you've not much height i'd recommend using cfls, unless you wanna spend a lot more cash on a hps, powerful fan and cooltube? For that area you'll need around 300watts of lights or use 50watts per sq ft if you want different dimensions.

Peace :rasta: