Just my 2 cents, I think at this point you should put a hold on getting RCA/E2E up and running and start planning your upgrade of SolMan, the 7.01 release has a ending support date of Dec 2013. If you have customized portions of SolMan you need to plan/research how they will continue to work after the upgrade is performed.
To answer your question about E2E though, start deploying SMD agents to all of your SAP systems, this is going to take a time depending on how many hosts (not SID systems, actual servers) you have in your environment. They will provide the new monitoring functionalities along with allowing information to be passed to CCMS.