What is a good ev spread for the event sucuine?

Question

I want to know ahead of time

It is going to be a calm mind wall so the set will be:

Aqua ring(Healing event move)

Calm mind(Stat up)

Ice beam(Coverage)

Surf(STAB)

I was thinking that becuase it is going to boost it's S.def any way I would want to put more evs into it's hp and def

Answer 1

Well, since this is a definite wall, you'd probably want max HP, and off course you'll want defenses. so this would probably be the spread:
252 HP
128 Defense
128 Sp. Defense

Sp. attack wouldn't be a matter, because you have Calm Mind for the boost, so I think this is a good EV spread.

Answer 2

252 Def
128 HP
128 SDef (Already Calm-Minding)