Hit Exalted with Valarjar just now, so I can use this mog now when I want.
The best cloak in terms of reflecting the design and color of the tabard is the Cloak of Ruminant Deception, the only downside being that it has pink crystals instead of red as on the tabard. The armor is the green vendor stuff from MoP that actually has enough of a "Titan construct" look to compliment the tabard and its origins.
Item List
Head: Warbringer's Crown
Shoulders: Jade Tiger Shoulders
Cloak: Yeti Fur Cloak
Chest: Jade Tiger
Tabard: Valarjar Tabard
Hands: Bamboo Plate Gauntlets
Waist: Jade Tiger Girdle
Legs: Legplates of Pure Purpose
Feet: Jade Tiger
Weapon: Lionheart Executioner, Reborn
Illusion: Titanguard