DR plan for Domain Controllers

I'm working on a DR plan for our DCs.  I've detailed most of the plan already, but would like any feedback or suggestions that you may have.  This current plan is based on the scenario that atleast one DC still exists.

Reinstall Server 2003 on the failed server and promote it to a DC.  Allow replication to bring the new DC up to speed.  Now, if the lost DC was the FSMO Role holders, those roles would have to be seized.  If the failing DC needs to be rebuilt, but can be salvaged temporarily, then transfer the roles instead of seizing them.

I've been told that it's wise to have more than one GC in your organization, but have read that you are not supposed to put the Infrastructure Manager on the same Domain Controller as your GC (http://www.petri.co.il/seizing_fsmo_roles.htm).  So what do you do if you only have two DCs?

Also, after seizing the roles do you have to name the new DC different than the one you just seized the roles from?

Thanks in advance for any help or suggestions!