Using Existing FAH Subledgers on New Primary Ledgers / Business Units (BU) / Legal Entities (LE)

Client is creating new legal entities, business units and primary ledgers similar to their existing configuration.

Before doing any updates, we were asked to determine which areas in Setup & Maintenance would require changes to accommodate the new ledgers/BUs/LEs.

For FAH, we're looking into how they would be able to use their existing FAH subledgers to the new ledgers, BUs and LEs.

From what we could gather, outside shared setups with Finance, all that's needed to be done is allowing the new ledgers to use the FAH subledgers in Accounting Transformation > Manage Subledger Accounting Options.

Are there any other areas we may need to consider for this?