To be honest I wouldn't go into ZA with gear like that. I don't really think you would have any chance of downing the Naralok (both tanks have to stand up to immense damage) but maybe you could off tank to Akil'zon but if the rest of your group has the same level gear it would be a very tough fight.
Obvious improvements to your gear would be t4 helm and gloves (or at least maiden gloves) from kara, badge legs (unwavering are good for where you are headed) and the iron tusk girdle from badges. Grind lower city rep and get the mace as you will need it to get to Akil'zon reliably enough to get the Amani Punisher.
Stack 12stam gems instead of those free heroic ones, provided you can stay uncrushable that is (although as far as I know bosses can't crush in ZA?).
The bears on the way to Naralok hit like trains and the gauntlet to Akil'zon will be tough as your main benifit there is aoe controlling the birds and adds and you will struggle to take them all.
Not wanting to sound negative or anything, and with a couple more pieces of kara gear, some badge gear with 22badges you get each run, and some rejemming you will be ready to start tanking ZA :)