Transfer Pricing EPCM vs Freeform

Summary: We are contemplating between EPCM vs Freeform for our Intercompany extension (transfer pricing) needs.

Content (required): We need to fetch data from ERP fusion from different ledgers. Not all ledgers are in 1 star schema (aka GLOBALCOA), since we are multinational, we have multiple chart-of-accounts, and hence different ledgers with more than 1 star schemas. The way our fusion ERP GL is setup, we would need to fetch data from different ledgers to come up with the right calculations. On papers, EPCM is a perfect application for complex calculation, but our understanding is it can fetch data from only 1 ledger set, not multiple. Can we can add more cubes in EPCM? or in other words,