firewall requirement

I have existing eSRS GW 3.52 cluster with 2 nodes and a Policy Manager running.  We only use it to monitor our DD, VMAX, PMAX and Isilon and will have no plan to monitor any other device in the future.  Firewall was opened for those devices and they are working fine since day 1.  I thought about upgrading the appliance to SCG but the disk space is not sufficient and I don't know how to expand the volume (OS level expansion) in eSRS Virtual Appliance.  So, my plan is to shutdown eSRS and deploy SCG with the same IP.  That way, I don't need to worry about firewall rules.  In case, it does not work, I can rollback to eSRS.  

I check the SCG doc and see new port are required.  "Table 6. Network ports for local system".  I know port 5700 is required for client access.  443 and 8443 are opened already.  I can open 161 and 162.  However, the traffic for ports below are not specified.  

80 TCP and HTTP Outbound Communicate using HTTP.  (Is the destination EMC Global / Enterprise servers?)

1311 TCP Outbound Communicate with Dell OpenManage Server Administrator.  (Is the destination to Dell servers in our site?  We don't want to add any Dell servers for eSRS monitoring)

5701 - 5704  TCP and HTTPS Inbound Collect telemetry from devices.  (source is the EMC devices like DD, PMAX ect)

Thanks,

Andy