Lighting looks okay, but there are too many shadows for me (mainly noticable on the first render). I would kill all but one of them for the sake of clarity.
The idea is great to share a nice studio scene preset for all, but i think this scene have so much light colors and so much shadows.
I see in some case that people use in her scene a backside mid black and mid white to get contrast reflections. I dont know how is the scene but reflection are fines for all case.
This is not Max Virus I think that it's better to get informations , tuts from other renderers and read their documentation too, you learn a lot !
I like to look at whatever feels useful
i wanted to have a lot of color, but of course it can be changed.
I'll tweak it and share.
My opinion
Is to use Lumi Light better, becouse scena is deeper, shadows is nice and render time short.
AA is rendered is more short time if you use Lumi poly.