I'd replace the defense gems with something else, like stam.
1) Depends on if your guild can clear ZA or not. If your guild is clearing ZA I'd try to get Chestguard of the Warlord.
If not, you're stuck with two options Chestplate of Stoicism or the T5 chest depending on how fast your guild progresses.
2) As for gloves, I'd say just wait on t5 as well.
That being said, whats with the trinket? (not the commendation)
Also, may want to consider picking up the badge bracers, Bracers of the Ancient Phalanx if you don't have them already it just shows the vambraces on your armory.