Here is the design
core 1 is at location A which consists 2 6509's running hsrp for roughly 20 vlans..
core 2 is at location B which consists of 2 6509's running HSRP for roughly 30 vlans.
Location A and B are connected via 1 WAN link.
With multicast running are there anything to take into consideration when implimenting multicast, that would be out of the ordinary due to HSRP. Will be using BSR with sparse mode only.