DEF: The reason I put DEF first is because this is probably the most important stats of the game. more DEF gives you more chances to survive. Especially for a class like wizard. I would recommend not just wizard class but all class (unless you are going only PVP or you are class such as duelist or maybe guardian, then look to the EVA section), because more of this stat make you less likely to die in any situation. But you really should avoid being hit, that's the most important. The cap for DEF is 75%, so there is no point of adding more than that if you hit that point.
HP: In my opinion, this is the secondary defensive stats in the game. I would only recommend having this if you already have 75% DEF or somewhat close to that.
EVA: This is the ultimate PVP stats. It's not that it has no uses in PVE, it's just that usually having higher DEF and HP will give you more chances to survive. The cap for this stats is 95%. So there is a 5% chance for you to get hit. But at the same time, when you do get hit, you will most likely get OHKO. But if for some reason you have the ability to excel in DEF and HP stats, by all means 95% EVA will make you so godly Surprised