I run a Nord templar and I love it. Me an a guildie both run a similar build, there are just two differences. I run two resto staffs and my friend runs two-handed and a resto staff.
They are extremely powerful as you can survive anything. No matter what weapon you choose, here are some abilities that are a must:
Sunsheild - BEST SHEILD IN THE GAME. Morph into Blazing Shield. THIS IS A MUST
Solar Barrage - Good AoE to pop when you are safely in your blazing shield.
Breath of Life - Great personal/small group heal
Then I would recommend putting some of your weapon abilities on the rest of the slots. We actually run a templar only guild and would love to help you get your templar up to full strength!