Thanks fellas. You've been a tremendous help.
I'll probably end up getting 2 4-banks (1 to serve as my key, 1 to throw some light into the background).
You guys hit it right on the head. I plan on using the Kinos to augment the natural daylight I'll have from 3 windows in the apartment. The scene will require these windows to be in frame a decent amount, so I'll ND them down.
I've been studying up on the fantastic Mr. Roger Deakins' work and have learned of his frequent use of a Muslin as a bounced fill. Apparently he's achieved many of his images without a fill and only a draped piece of Muslin in its place.
So currently, that is my planned approach: 4-bank Kino as a key, Muslin bounce as a fill, maybe a CTB'd 300 as a kicker.
I'll keep you guys posted. Thanks again.