Attached an updated diagram to include Edge devices.So basically, DC would be a LAN so any IGP is good, so OSPF would work.I think the AREAS would be independent of each other. try keep it simple while practical.
Just to re-iterate Balaji suggestion, it's best to use BGP TE to manipulate the traffic.PBR with IP SLA ideal when using FHRP.But given you are doing BGP peering with both ISP, it is best to use TE with some mix of AS pre-pending and LOCAL- PREF via...
SNMP access via VRF interface - I know this is an old thread, however was having same issue and was looking for a solution and happened on this thread.I was able to eventually resolve issue, so wanted to add solution so may assist others with same i...