Fussypants

Unless you have an abundance of them, buffs that fall off upon death (food, runes, etc) aren't as helpful until you get the rhythm down

(While you're figuring out mechanics, you'll most likely die a lot. I certainly have!)

Once you start getting the pulls more solid though, definitely make use of any buff you can

For Talents, I'm using Crusaders Might, Unbreakable Spirit, Repentance, Devotion Aura, Holy Avenger, Sanctified Wrath, & Beacon of Faith

Of note, Repentance is required to CC the adds, Holy Avenger haste buff makes CCing much easier, and BoF gives you 2 beacons

The other talents I took because either they did the most DPS or healing in this situation, or I was just more comfortable with them

Trinket-wise, I actually don't have anything particularly unique or even very good but I have heard that the cake trinket DOES NOT WORK

(I unfortunately do, so I've had to switch to an 870 mythic dungeon trinket that's mostly a crit stat stick but it works)