PURE MF BUILD?? Help please

[khronik]

PURE LIGHTNING MF SORC

A little about my sorc.

Max Skills - Current Damage
Lightning Mastery
Chain Lightning - 6k
Lightning - 12k
Charged Bolt - 300 x24bolts
Nova Max Last - 900

Single Points
Teleport
Static
Thunder Storm - 900/burst
Warmth
Frozen Armor

Gear Set-up
Assume ALL items are PERFECT.
ALWAYS STRAPPED
War Traveler's
Spirit Shield [and on swap]
BK + Nagel, Or Nagel x2, Or BK + SOJ
Gheeds & smfc's.
Don't have torch or Anni yet, building pally at the moment

ACT 2 Mercenary Holy Freeze
Eth Infinity Colossus Voulge
Eth Andy's Helm
Eth Fortitude Archon Plate
- Planned gear, I don't have these for him yet.

Build 1 - Current
Full Tal Rasha's
Magefist's

Build 2
Crescent Moon
Vmagi
Arach
Magefist's
Griffon's
Mara's

Build 3
Tal's
- Belt
- Amulet
- Armor
Crescent Moon or Oculus
Magefist's
Griffon's

For my current build, would getting my merc fort asap be beneficial?
I have the runes, just lookin for the armor.

Please help me out.