Im looking to introducing my final 2008 DC to replace the last 2003 DC. I have notcied my FSMO roles are held by one 2008 R2 DC with the exception of the Schema master this is still held by the last 2003 DC. How would people advise to proced from this.

1. Transfer the Schema master role to the other DC with the other FSMO Roles, and then trasnfer them all at teh same time once the old 2003 DC is decomissioned.
2. Promote the new 2008 R2 Dc and transfer the schema maser role to the new Dc and then transfer all the other FSMO roles from existing 2008 DC to New 2008 DC
3. Other