You meant: "Pure Protector (lv 82): STR 0, CON 100, INT 4, WIS 48, AGI 99"

I don't know, if it is a great idea to keep it so pure CON/AGI, but you can try:

Pure Protector (lv 199): STR 0, CON 350, INT 4, WIS 48, AGI 200
As a pure protector, please wear fully MATK equips to increase the successful strikes from assistant skills.

In my opinion, the Earth Mage is much better, if you Earth Mage and Pure Protector combine, then it will be:
STR 0, CON 300, INT 100, WIS 52, AGI 150, or as extra with a better resistance against magic and assistant skills:
STR 0, CON 280, INT 100, WIS 100, AGI 122

There are many possiblities and everyhing has advantages and disadvantages. You need to use your improvisation how to build a good Earth user really and choose wisely. That is a fun of the game.