This can be done in a variety of ways, and even after this, some people - including myself - will keep using their regular class or glass-cannon sets.
1。 Defensive armor sets
Method #1: Adding one more status to resist.
Currently, the only armor set that has resistance to 3 statuses is the divine set so I suggest he following:
Royal Jelly set: sleep, stun, poison
Grey Owlite set: fire, freeze, shock
Dread Skelly set: curse, freeze, poison
They will each have 4 points of resist per piece which is the equivalent of a max unique variant.