Definitely lose the chest first off. There is a nice chest piece from rep reward with aldor and a nice chest, think it's called jade fire or jade something that drops off of the final boss in botanica.
Also might want to consider losing the warchief shoulders since those are more of a tanking warrior shoulder due to the +strength and maybe look for something from the d3 set, the name eludes me for some reason.
Also lose the regal protectorate trinket and run shattered halls for the figurine of the colossus.
Need to get your shoulders enchanted, probably with the enchant from aldor, again not a hard thing to get.
And I'm a little ashamed for you that you'd even link your armory with green bracers that only have +7stamina?
There is a nice belt from the breaking into the arcatraz quest, again my brain has left on vacation and can't remember the name, but I know that it gives some nice stamina as well as +defense and I think +shield block.
The sword I think many people would argue is good, I went with the crystalforged sword and stuck the +spell damage on it. That is a personal preference since I didn't want to grind consortium rep for the sword, so I'm sure many people will argue with me about which is the better sword.
Oh also might want to consider the neck from either revered or exalted rep with cenarion, it's got a nice +defense rating, but you do lose a little stamina in the switch
And more of a personal/guild preference....lose the 3 points in pursuit of justice and put them into precision, since as a pally tank getting hit by spells and strikes = aggro; not getting hit=dead squishies and pissed off people. Plus with crusader aura the pursuit of justice is kinda a waste of 3 points
Also sorry for the long post, didn't mean for it to sound like I was preaching. But do consider changing any and all greens to at least mid 60's instance blues and always enchant. Yes it's expensive but like someone told me when I started gearing to be a tank...forget about having more than about 100g in your bank account at any one time because if you've ever got more then your gear is suffering.
Finally, ENCHANT ENCHANT ENCHANT. If you want to be taken seriously as a pally tank and continue our great legacy of being able to multiple aggro easily you've got to spend the money to enchant your gear with +stamina and only +stamina since we are the true masochists of WoW and love to get hit...it always makes us giggle cause it tickles