new challenger has arrived!!!

come, face me (barb) 

based on your gears, since you only have 20% holy damage, assuming your Herald of Righteousness give you another 20% holy, you will gain 16.6% increased in damage for your holy attack.

if your drop in DPS is less than 16.6%, you can consider it since almost all your damage (proc from sunwuko) is holy.

on another news... 2.1.1 coming tonight... sad no raiment improvement

http://www.diablofans.com/news/48209-new-patch-datamined

taeguk should be a good choice too. if you use taeguk, you should use FOT - Quicken instead of FOF.
You are over-gear for T6 But you may consider changing passive Exalted Soul / Guardian Path to Alacrity for more DPS. Additional 15% attack speed also help to proc your Flying Dragon and Mirinae.

To gear up for grift, you need some sort of huge reduce damage. At grift 33 onwards, your double Unity and stat toughness may not be enough. Most in the top leaderboard sort for 50% reduce reduction from Epiphany, on top of Aughild set and Blacktorn and some reduce damage from elite from chest. Damage reduction is more scalable compare to life%.