theorycrafting

im working of making a skill tree to make the following build work

key uniques
scold's brittle
doryani's fist
rainbowstrides

skills
cast when damage taken lv1+arc+ice nova+shock nova+firestorm+(??6th link??)
3 slot for auras
cyclone+weapon ele damage+curse on hit+conductivity
lightning warp+reduced duration+faster casting+???
tempest shield+riposte+reckoning+????

do you think it would be viable ? what are the bacic stats to aim for from skill tree ?
did i miss anything ? gems ? key unique ? a mechanic i overlooked ?

i think i should aim for (skill tree wise at lvl 80)
25% block
150% life
200% or more lightning damage
resolute technique
at least 2 gem sockets

furthermore i think i will need 1 more defence mechanic at least, any idea for me ?

best i could do

http://www.pathofexile.com/fullscreen-passive-skill-tree/AAAAAwABAO4EBwSzBjkJMwthDc0UIBUgFm8ZtBo-Gmwb8RzOHt8fAiSqKU8qTStQLOktgy_MMjQ1kjbFNuk8LT0PPfw_J0GHRtdHfkrIT1ZQR1FgVcZYY18_ZU1mVGebaHRo8nGFcg9yqXYReTl82X7HfuKCm4LHguSDX4PMg9uE2YV7hrOKr4zPkBGUb5SgmjudrqIApwiuPq9sr6exQrM_tz69Nr6nvrzAZsGCxPbGrsy30TbVddgk2E3Yvdpi2rnhc-Is42rkIuRR5Ozli-nV7DjvDvAf8wb2SPcy-ej7qv4K_lT-jw==

this is lvl 90 think you can do better than me ?