should I enroll in the jppl program or combine poli sci with philosophy for law school?

Look up the requirements of both and see what interests you more.

Seriously, nobody here can just tell you what program to go into, especially when they both sound pretty similar and one of them is brand new.

jppl basically is a combination of poli sci and philosophy.
It's more organized, though, so your classes will have less of a chance of overlapping.
Honestly, was gonna apply for jppl but you need to fill out an application and write an essay, and i was pretty lazy..