Richmond PPEL has some sample course plans, which list three courses in the first year (out of probably eight total in the first year):
https://ppel.richmond.edu/major/sample-major-paths.pdf
One of the courses is an introductory microeconomics course, which also fulfills a course requirement for Cornell ILR TO. It looks like another Cornell ILR TO category (“western intellectual tradition”) can be satisfied by an American government or perhaps political philosophy course listed in the sample course plans for Richmond PPEL.
In some cases, AP credit may be applicable.
In other words, depending on what he has already taken and what AP credit he has, he may be able to work toward both Richmond PPEL (and perhaps other majors) and Cornell ILR TO simultaneously without being forced to decide now.