Shadow Assassin Chaos Lightning Archer Build Question and Suggestions

So I am not very familiar with all the items, gems and jewels in the game or how to use them and I am trying to build a Shadow Archer who does lightning and Chaos damage. I will be using a
Voltaxic Rift
And I am currently using

Lightning Arrow, Volley Support, Physical to Lightning Support, Added Chaos Damage.
I also have 50% crit chance and are using with a Wraith gem, though the use of the Essence Worm with Wraith was just because I had no better ideas. For my curse, I am using Warlords Mark and for single targets, and for the increased attack speed and damage, I use Frenzy.

Obviously, I do a lot of damage, other than this, however, I have no idea what to build for defense and I can not seem to find a build that is close to what I am doing, so I would like suggestions for everything actually, gems, items, builds similar to this. If someone knows how I can get my physical damage to zero without using Dyadian Dawn that would also be awesome.

I was thinking of going CI and possibly Mind Over Matter, in which case I would switch to Scion. But even after looking at other CI, Mind Over Mater builds, I am unsure how well it would work for this build. For reference, my skill tree looks like this, thus far.

http://www.pathofexile.com/fullscreen-passive-skill-tree/AAAABAYAAbDYotnIFPVvaowWv3X9hG_UQrVI62MRLysK44TAnKc09vxHBtDQj_pcQIfLp5t1ns8VVL0V7ZaL1bltbOd0wQD1S7468uFjQw3RJpVh4uaBy73o1gW1Go1bJn_7Nj1VhaXL

Obviously, I am planning on taking CI, as well as several crit chance nodes which will bring me to an almost even 50% chance crit (+834%), and 300% crit multiplier(+292%), with many of the crit nodes from the assassin and archer, items, power charges and assassin ascendency.

What I would really like is a crit archer that converts all damage to chaos and lightning only, though that seems impossible.

If I can passively gain Power and Frenzy charges somehow and use projectile weakness that would be preferable.

"

CoyoteShisou a écrit :

If I can passively gain Power and Frenzy charges somehow and use projectile weakness that would be preferable.

I just found Doedre's Elixir, nvm.