A two dye panchro system will work due to the blue speed inherent in all AgX emulsions. In fact, with the right dye, a single dye panchro system is possible, but I have not found any good dyes on the open market for this type of work.

As for having achieved a given sensitivity, it is always useful to have separation exposures or wedge spectrograms to prove any given sensitivity. I learned that the hard way many many years ago.