I disagree with all of this, the tech booth should always be front of house, the lighting director and sound engineer have to be where the audience is to give them the best experience possible.B-way was 21 seats for sound - 3 rows, 7 seats. 16 is probably 2 rows at 8 seats or 6 X 13 feet.
If you can split lights and sound - - depending on how designed and cued the lighting is versus the busking - you might put lights backstage and sound in less space in house. I guess I would also wonder if in 100 seats you are reinforcing or just playing effects. (Return to discussion on performers today can't project for crap)
It was all back stage for years on B'way so be done.