Committed Information Rate

We have a flat layer 2 network with about 10 different sites on this transport.  2 of the 8 sites are datacenters.  I'm looking to configure DC01 and DC02 to have a CIR between the two.  We have a 300Mbps pipe for everyone to share, but I want to reserve 60 Mbps for all datacenter traffic.  Here is an attempt to configure this, can anyone verify this will work or suggest a different way to accomplish this task.  

config firewall addrgrp
    edit "Datacenters"
        set member "DC01" "DC02"
    next
end

config firewall shaper traffic-shaper
     edit "Datacenter-to-Datacenter"
        set guaranteed-bandwidth 60000
    next
end

config firewall shaping-policy
    edit 1
        set name "Datacenter-Traffic-Policy"
        set service "ALL"
        set dstintf "port1"
        set traffic-shaper "Datacenter-to-Datacenter"
        set traffic-shaper-reverse "Datacenter-to-Datacenter"
        set srcaddr "DC01"
        set dstaddr "Datacenters"
    next
end