Kirel Narak is super Big in mythic+ only beaten by bracers. So you are in luck! The ring is good as well but doesnt match the bracers for M+ imo. Control is king and you can carry a 5man grp of boosted animals with the infinite sigils youll have with bracers.
Why you rank the cloak so highly is absolutely beyond me. 15% is negible and immo Aura is too valuable off cd to be gaming for minimal dmg reduction.