Multiple Local DNS Servers

Hi
I have a LAN with 2 Windows 2003 DCs. I want to configure each as DNS servers. This is how I intend to configure them:
– each server’s DNS forwarders will point to my IPS’s DNS servers
– Server ‘A’ will designate Server ‘B’ as it’s primary DNS server and Server ‘A’ as it’s secondary DNS server
– Server ‘B’ will designate Server ‘A’ as it’s primary DNS server and Server ‘B’ as it’s secondary DNS server.
Is this the optimum setup?
Thanks a lot.