Comprehensive replies! Yes, as you obviously know very well, the 'standard' daylight is 5500K, so you just have a small adjustment to make. We can assume that you aren't talking about household fluorescent tubes (in case anyone tried to use those after reading your description), and also that the colour patches won't contain odd dyes, brighteners or pigments as they are intended to be for reproduction testing purposes.

You seem to be making a determined effort to check what is going on in your comparison - inevitably I'm curious about what you will be doing with the information! The only thing not mentioned so far is the processing but I doubt that you are planning to use an out-of-control lab for your work. How will you compare the Ektar and the transparency films, via an RA4 print (reflected versus transmitted light, oops)?