I would update your VCP to 6 first. That brings you into the vSphere 6 timeline and allows you to say that your VCP is current. Since you have already been through the process you can use the blueprint and practice exams on mylearn to prep for it. Then after you hold a VCP6-DCV, I would go for the deploy VCAP. That one is a hands on deployment and troubleshooting cert. It aligns well with being a datacenter admin/engineer. Your design VCAP is an architect style cert that is useful in consulting practices but in my opinion is one above the deploy cert.