Glad you asked..
I have converted a foot-locker 37 inches wide ~ 24 inches deep ~ 75 inches height
Tight quarters indeed. I have a HPS fixture that provides 11 thousand lumens at 100 watts.
My young ladies measurements are ..
Indi 31? vertical ~ 20 ?? across

Sati 19? vertical ~ 19 across
Oh and I Lucked out big time BOTH indicate female gender