[Feedback Wanted] Semi-crit Cold Snap for HC 2.0

This is a build idea, I haven't had the chance to play this build yet. I am also a SC player, so I would love input from HC players.

The idea: semi-crit cold snap self-cast using voll's protector to generate power charges and EB-MoM-ZO to deal with voll's 50% less mana.

L91 Scion Tree

(Oak/Kill/Alira -> Oak/Alira/Alira if I survive to 92).

178% Life, 60% ES, EB, MoM, ZO, 4% Life Reg
174% increased damage, 215% crit chance, 20% crit multi, 5 jewel socket, 40% inc aoe

Jewels would be freeze duration/freeze chance + life

Gear

Wand with %spell and +x-y cold to spells

Doedre or Windscream so I can use temp chains + frostbite or assmark

Voll's Protector

AR/ES Shield with life

AR/ES gloves & boots with life and res

Shaper's Seed ? Or generic caster amy with %ES

Gems

Cold Snap - Cold Penetration - Added Cold - Conc Effect // Inc AoE, Hypothermia, Conc Effect, Spell Echo, Eleprolif, Life Leech

Herald of Thunder - Herald of Ice // Arctic Armor - Vitality/ Discipline // Haste

Whirling Blades - Faster Attacks - Frotify if I get a dagger

CWDT L15 - GMP - Arctic Breath - Ice Spear

CWDT L1 - Immortal Call - Phase Run/Increased Duration

Arc/Shock Nova - Curse on Hit - Temp Chains - Frostbite or Elem Weakness