Solution for a network of jewelry stores

The client has 5 offline points for the sale of jewelry. Now they work in 1s. They plan to create an online store, but they faced a problem: in order to integrate the online store with 1C, a lot of improvements are needed. Therefore, they select CRM. Need: - make integration with 1C (payments should be sent to 1c) - download the contact database from 1C - set up a bonus program and loyalty cards. - receiving orders from the site (not yet decided on which platform) - making payments in the system. Integrators, has anyone implemented a system for the jewelry business? The client would love to hear the client's feedback. How can this be configured on a OneBox base?