Need some advice

I'm at an impasse as to what to do with my build.

It's a disfavour cyclone build, I'll quickly explain the attack links:

Cyclone>BloodMagic>Faster Attacks>Concentrated Effect>Melee Physical

What I'm having trouble deciding is whether I should trait for a 4th aura or not.
Currently:
Vitality
Hatred
Herald of Ash

Possible new aura:
Grace

Difference in passive trees:



Statistical differences, with grace has:
+18% mana reserve
+22% effect of auras
-6% attack speed
-58% melee physical damage
-16% armour & evasion
-22% max life

other changes:
with grace option, alpha's howl is required as a helm

everything else is the same. as you can see, there are significant drawbacks to fitting in another 60% aura. my question is, is it worth it?

other things:
i'm using carcass jack, which doesn't give armour.
i'm using astramentis so I don't need to trait for dex/int at all
i'm using ming's heart

why even bother?
as a melee I'll have very little armour or evasion. grace is meant to supplement that.