I think that is fine if your going to upgrade all of them in a single night.   If you want to opt for a phased approach such as updating vCenter/vSphere one night and doing View another night you would need to go with vCenter/vSphere to 5.0 update 2,   then later do View 6.01,  and then at another time go back and upgrade vCenter/vSphere  to 5.5.