Hi Vicky,
thank you for your reply.
vcenter 5.5U1 supports Windows 2012 R2 OS and SQL 2012 for database....
What I meant is to setup the 2012 VM using the hack and install vCenter....Than once the hosts are migrated to ESXi5.5U1 I could clone VM and remove the hac.
I am reading about certificates and yes it seems that functionality is not affected, just the security side of things
Thanks