I would suggest working with Cisco PDI to work through design scenarios. For example by just looking at a pic hard to make out all your end user requirements here. The 5300 is an older gear, most deployments are moving to CMS or v TS based on requirements or even CMR-Cloud
Otherwise this is a very standard UC diagram with endpoints/gateways. TCS is needed for recording if that's important or use CMR-Cloud and record in WebEx
Suggest reviewing the preferred architecture docs here
Design Zone for Collaboration - Cisco