[2.1] FireBall - Chaos - ES

Hi

I like to make a FireBall build with 100%Chaos dam (from the dagger and armor) and ES as tank

Thes is the Skill tree I com op with 4 now:

https://www.pathofexile.com/passive-skill-tree/AAAAAwMA37DfiukCS64bJdlbbRktixFQl_Qi9B_HNblSU2wLpyuXlT1fkydMs3_GUzWus9AfoqPBxVBCQZbv61F0D8TsGIhCjDYFQtD1Ow0agTt8j_osvx3ZB2OJ0yycEQ-mmbjKXEDr9RXXQ1TLvXBSEFgRLayYh8tkncMJhq70ceaBKguHZXyD99d0Vaeb8h25k1ZjFr9d8uvuhEhfKnWeKwoy0YUyXGvPFREvAx5FR8Nt62MfQcBmtUg8BZ_f73yaO-08gpvVpuQiKU8abJ4898GMdvFsNthJGyqN7FWa4EWdU1I=

the Jewel slots is for Rolling Flames and need 50 int - if I get one more will is stack and be "op to 100% radius" ??

http://pathofexile.gamepedia.com/Rolling_Flames

I like to get som comments on it ;)

Main skill:
Fireball - GMP - Echo - Fast cast - concentrated effect and or void manipulitiaon

Suport:
Fire Golem
And some defence skills

And on thing I am not shur on:

If I got:
+100% fire dam
And +100% Chaos dam

I do 100 base fire damage that will then go to 200 fire damage and be convertedet in to Chaos. Will the 100% Chaos damage the go on the 200 or the base 100?? (must be the base 100 or it is to good)

/Ragnazor