Depends which boss, but the first thing I noticed when I clicked your armory is the low armor. You're about 4k short of entry level ICC25 tanks.
Probably investing in some badge and crafted gear would do you well. Gemming: 30 stam in every socket, save for one purple gem (dodge/stam or agi/stam) in one red slot with the biggest stam bonus possible. And I don't mean the legs in your case, since you're replacing those with Pillars of Might. Shield enchant needs to be changed to 18 stam, chest 275 hp, cloak 225 armor, PLEASE enchant your weapon (blood draining or mongoose), put an actual tanking enchant on your boots as well.
What Dreador said. I'd hate to hit ICC10 with armor that low, really.
Dual stam trinkets, and no +armor belt/gloves/chest...
There's nothing wrong with dual stam trinkets for most fights. The only reason I'd suggest an armor one as well would be because his base armor is so low, but just getting Pillars crafted would solve a large amount of that issue.