Need some advice on enchants/gear

[Lucas2544]

I am trying to get ready to tank prince aswell as gruuls so I need some advice.

My Armory

After doing some reading on this site I have decided to change some enchants. I am going to put +18 sta on my shield and 2% threat on my gloves. As far as my helm goes, I want to put the +18 sta / 5% stun resist meta gem in my helmet or i was also thinking of putting the meta gem that has def and a small chance to heal you when you get hit. But how are my other gems?

Basically my problem I think is I need more armor and alittle more hp. Im going to try and do heroic sethek for those shoulders so that will help.