Gear at level 85
I'm not sure you should have 90% of your T10 gear left at level 85. Even if the quest greens/blues don't improve your stats that much, the stamina will certainly be needed. At level 85 as a rogue (if you're a hunter it will be similar) you should have around 95k health - this won't be the case if you keep your T10 stuff.
That is going to really hurt when you start doing the dungeons.