Hi Scott
Do you have VSA included in your license? If believe its now EOL and vSAN is the replacement, When I first looked at vSAN I found it quite an expensive solution for licensing and server grade SSD's
I think the P4000 you were suggested is over kill for what's needed, but have you checked out the Synology NAS'? They will probably come in cheaper than vSAN and the SSD's and will give you what you want out of the box.
Rich