I know this has probably been discussed before, but what is the desired EV distribution on a Wobbuffet?

Should I go all in on HP, and divide the rest on defenses.
If that is the case, should I make the defenses more or less even, or stack one?

Speed doesn't matter except for Safeguard/Destiny Bond purposes, so I assume shun that attribute also.

I'm thinking of putting 252 EVs into HP and going with a + Spec D or + Def personality and averaging out the defenses on EVs. Is this a smart move?