Hi,
In case of real disaster and unplanned failover you don't need production site's vCenter and SRM be up and running.
But if you want to use planned migration feature, it won't work with your current setup, because this does require vCenter / SRM be available. And when it will shutdown DB VM, the migration process will fail.
You need separate DB server for SRM / vCenter, physical or virtual (in case of virtual it should not be protected for the same reason as above).
Michael.