Help me with my discharge build (Softcore)

Not native english speaker, excuse my mistakes.

Hi, I'm actually a Discharge templar lvl 59. I'm CI and use Power syphon, blood rage and enduring cry to stack charges.

My fist goal was to kinda be a support on group with conduit and power syphon while still wreaking solo with discharge.

But now that I am CI i have a big problem : stuns.

My first build Idea look like this

http://www.pathofexile.com/passive-skill-tree/AAAAAgUBBAcFWwx9EH8RLxXXFkAZ1x8CKPopTyo4LL8tHy3SMtE2PTbFOtg74TwFPV8_c0GHQ2NFR0bXRwZMs03YUDBSU1ZjV-JY9Vv0XcZd8l76XypfamNDZp5nvW0ZcFJw1XFNd-V4znq4gW-CHoKbgseFfYauiEKIa4uMjHaP-pUgl5WZmprPncSePJ_fpcunCKcrrpO1BLb3tzG4k8BRwcXB88Lsw23GntMb14bYJNsC217b5-Fz4vfjhOQi62Pr5Ovu7BjsOO0g7m_vfPId8uH8qw==

With a good lightning damage wand in mind.

Now i have a possible respec Idea :
http://www.pathofexile.com/passive-skill-tree/AAAAAgUBBVsMfQ6tEH8RLxLhFHUVIBXXFkAY2xzcIWAotSj6KU8ppSo4Kk0shSymLL8s6S3SMgkyfjLRNj03ZjeDOtg8BT8nQKBBh0NjQ5xFR0ZxRtdHBk3YVmNY9VoaW69b9F3GX2pgiGFSY0Nmnm6qcU10QXTxerh_xoFvgpuCx4V9hq6Ia4uMjHaP-pMnlSCZmprPncSePJ_Ln9-i6qTCpcum666TtAy1BLb3tzG4k8HFwuzDbcae14bb590N4XPjhOQi62Pr7uwY7DjtIO9O73zy4Q==

Less focused on crit and less ES but more charges, IR and US. I would also have less mana and would take a physical wand which would synergise well with a more lvled blood Rage (actually i use a lvl 1 one) and maybe point blank .

My question is: Do i stick with a chayula or IR/US combo is better late game ?

u need eye of chayula onyx amullet it gives all attributes,reduced max life,irr,and cannot be stunned