Since we're on the topic...
I had heard "geared for kara, geared for heroics" and the converse "not geared for kara, not geared for heroics." I would agree with Losie in that decent gear is available without running heroics. Heck, I got all mine sans Heroics. (OK, I sneaked in a few runs and got my Libram of Repentance eventually but that was all! :)
So some specific gear ideas?
Felsteel Helm and
Gloves. Although for gloves, what you have isn't bad.
Waist could be the one from the Arc key quest series, kinda long, but worth it.
Good choice in weapon, throw a +40 spell damage enchant on it for sure. Shield is good, but
Shield of the Wayward Footman could help with being uncrushable.
Also, your stamina isn't horrible, but more is always good. anywhere you see a blue gem slot put in a
Solid Azure Moonstone(
Star of Elune if you can afford it, but you could wait til you get even better gear for that). It seems you've got some good ideas though. Nice choice for the
Enduring Talasite. They're pretty cheap (15g on my realm) so certainly not a bad gem to use.
There's more but as mentioned the "Maintankadin" forums are great. In particular, I found
this thread helpful. Not the only way to do it of course, but a nice springboard for sure.
Good luck and have fun!