...............Would one PRI have PRI-A and the other utilize PRI-B for the pool outdialing? Thanks
That depends on how you are using them.
Usings one for dialing out and other for incoming - not usually.
But if so then PRI-A and PRI-B.
Otherwise - Using both to act like ONE big PRI? Then set them both for the same PRI-A.
Using each for dialing a different location or different way?
Then two pools. Example: one for local and one for long distant.