vCenter 5.5 to VCSA 6.5 upgrade/migration (with SRM)

Hi vSphere Pros!  

Has anyone done or does anyone have any advice on upgrading a Windows vCenter Server 5.5 and vUM to vCenter Server Appliance 6.5? 

There is also Site Recover Manager in the environment (Two physical datacenters in different states, each with its own vCenter. SRM is used to protect one of the datacenters to the other datacenter which is (obviously) the recovery site).

VMware has an 'update sequence' published as a KB, but I am not certain if that applies to an upgrade scenario, in terms of the order you would perform the upgrades.

Thanks!