I've been trying to reconfig the 2Wire Uverse router like you show, but each time I get this message:

Errors

The manually configured DHCP range is not within the specified subnet or you have entered an invalid DHCP Lease time.


I copied your example verbatim 3 different times but always got the same message.  And the Lease Time stayed at 24 hours.
Any ideas?
Thanks

I would have included a screen shot, but I'm still still trying to figure that out.