Clarification regarding accounting principle assignment / S/4HANA Cloud Public Edition

We are implementing the S/4HANA Cloud Public Edition system for a Client from the Automotive Industry and have a question about the ledger and accounting principle assignments. Currently, ledger setup and respective accounting principles is as following:

0L – Leading ledger, combining local GAAP principles for two company codes (Polish and Mexican). Both companies have the same YCOA chart of accounts.

2L – Non leading ledger assigned to one IFRS principle, for both company codes.

Therefore, we would like to ask for your recommendation regarding such setup and know if there are any possible future constraints.

Please note that both companies share the same fiscal year which corresponds with the standard calendar year and there is no plan to change it.

Moreover, a lot of transactional data was already posted due to ongoing tests.

Thank You! 
Best regards,
Michal Czubaszewski