Jim, that looks like a really good use for the PLM. What I have found; however, is that it the PLM is very difficult to use for portraits because it is so huge. It is almost impossible to get the light far enough from the lens axis to consistently prevent eyeshine and red-eye. Here is an example of how results can vary by a slight change in pose. These were taken a few seconds apart with the lighting behind and to the side of the shooting position.
This one is OK with just a little eyeshine in the right eye (camera left):
And this one is unusable, except for horror movies:
Of course, it is not nearly as bad with brown, green, and golden eyed subjects. But if you use this setup Murphy's law will trump statistics and your first 10 customers will all be blue eyed.