stealth cabinet or book shelf grow NL#5

nl5
soil
cfls
31-32 -16.5 inch space or
24.5 - 44 -12 inch space

im thinking the 44 inch tall space but doors will have to be installed.
is 12 inchs enough room for horizontal spread?

is there such thing as short and sweet ?
what space will be better for the plant?

bumpppppppppppppppppp

i work under similar constraints, 15 1/2 circular grow chamber
i've found that's pretty close to a minimum, though i'm sure some have managed to lower
but at 15/16 inches you can get a nice miniature plant, best result was about a 1 1/2 oz yield
it was nl#5, which is what caught my eye in your title