If you are looking to cut down on your upfront costs I would recommend looking into the HPE Renew Program. This is equipment that has been out on demo and HPE has certified it, it comes with the same exact warranty and coverage options, the only difference is the SN is appended with an R (at least that is what they did on the EVA arrays). You should be able to purchase HPE Renew equipment through your preferred vendor who will work with your local HPE sales rep.
http://hpe-renew.hpe.com/us/en/storage.html