Shopify App with External Payment Handling

I’d like to request help on how to tackle a case where we must pay to two separate bank accounts.

use-case: our existing shop needs to add 2 additional markets that are fulfilled thru a separate fulfillment service that handles international trade & compliance. This separate fulfillment service must handle the payment with the end customer.

Is this the correct solution?

  1. Become a Shopify Payment Partner (hmm.. it seems this is no longer supported)

  2. Create a Shopify App

  3. Have all payments go to an external checkout to complete (Payments API)

  4. Implement the Fulfillment or Order API to transition orders thru states

  5. For the existing markets, the checkout will use our Stripe account, for separate markets it will use the fulfillment service’s Stripe account

Many thanks ahead of time.

-Danmark