Build planning (noob) focusing on defense

I've never really played a Templar, or any melee character, but I'd like to give it a try.

The focus is on defenses, with 365% increased armour (249% flat increase + 20% when using Fortify + 96% evasion rating and armour) + the Iron reflexes keystone (all evasion rating converted to armour). Also 61% elemental resistance (+28% when holding a shield), a lot of life leech etc.

Feel free to take a look at what I've planned and tell me why it sucks (I'm a noob and I've never done this before).

Skill Tree