(Talisman) 2.1 Chaos/DoT Witch (Dual-curse)

I started theorycrafting about the new chaos based skills and I came up with this witch build.

It mainly revolve around casting Contagion and Essence drain on the targets then increasing the damage output by applying Wither multiple times. I plan on running two curses with the new support gem Blasphemy (temporal chain and enfeeble). I also wanted to use an aura such as Discipline or Grace to boost my defenses.

The main stats from the passive nodes give those bonuses:

265% Energy Shield
127% Evasion
142% Life
124% Damage over Time
130% Chaos Damage
11% Cast speed
30% Area Damage
24% Spell damage

I have never attempted a character revolving around ES/Eva with somewhat of a decent life pool for defense and I wanted to get some feedback.

Here is the link to the passive skill tree:



Would this character be viable end-game? If not, what kind of changes should I bring to the build?