The idea is to profile for light. My setup includes Rosco #1991 or #1995, CTB, pola filter, and a 50% magenta filter on the halogen lights. This way I have full spectrum and equal exposure for all raw channels.
I seriously suggest looking at ColorChecker SG target for profiling, setting the exposure from SpyderCUBE or similar self-made, and having a flat grey surface for both profiling and repro work.
Iliah has made some excellent suggestions. Placing the CTB (and magenta filter, if used) over the light source rather than the lens makes sense since one does not need optical grade filters, and composing and focusing would be easier since the light loss from the filters does not occur in the camera optical pathway. Using ICC profiles made with the ColorChecker SG would obviate the use of LR/ACR for rendering, but one could use Capture One or Rawtherapee.