I did a similar shot a few years ago and was never really happy with it, so why not revisit? Still not head-over-heels with this attempt, but it is miles ahead from the other one.
D700 with Nikkor 50mm f/1.8
Metered with Sekonic L-358 Flash Meter
ISO - 250
Aperture - f/8
Shutterspeed - 1/250s
The setup.....
One PCB White Lightning X1600 with a 10° honeycomb grid
One silver reflector to catch the back
One silver reflector for Hair light
One white reflector to bring up the chin shadow
The distances......
Camera to subject - 6 1/2'
Main light to subject 8'
Subject to background - 4'
Subject to body reflector - 2'
Subject to hair reflector - 3 1/2'
Subject to under reflector - 3'
The solo light stand was my X marks the spot, with the small dumbell on the floor. The knurled bit at the top of the stand was my focal point for my camera side eye.
Thanks for looking.