A financial services company with 15,000 endpoints is designing a new Symantec Endpoint Security Complete (SESC) deployment. The company has a central data center and 50 branch offices with varying bandwidth. The primary goal is to minimize WAN traffic for definition updates while ensuring high availability for policy management. The design proposes two load-balanced Symantec Endpoint Protection Managers (SEPMs) in the data center and Group Update Providers (GUPs) in each branch. How should the SEPMs be configured for replication to meet these requirements?