You will find a document on Multisite and CAC/Traffic Shaping here:
https://supportforums.cisco.com/docs/DOC-9836
My advise is read adn understand them, then plan your design, then stage it in your own lab to make sure you know how to make it work, before deploying.
CCA 2.2.1 should be used to set this up (the latest release) and do undersand you need unique DATA VLAN subnets at each site.
Steve