Minimum PoB (not actually tested):

https://pobb.in/XB1erJSAXImk

PoB of Build in the Video:

https://pobb.in/XTfOlGXEJYmM

My League Progression (EA-Elementalist Leaguestart) NOT A GUIDE ON HOW TO START THE BUILD JUST MY PROGRESSION:

D2: https://pobb.in/viDb5wSZOF9p

D3: https://pobb.in/fLNshMA3046J

D4: https://pobb.in/r4NQ-8H0ktlx (swap to golems)

D5: https://pobb.in/MPaHXRg-Ezgx

D6: https://pobb.in/0hfIA5aOOg1R

D10: https://pobb.in/Cr33AlBrZ18I (mageblood swap)

D11: https://pobb.in/M0imrhQtORPY

D12: https://pobb.in/D-7onyUKgq00

D13: https://pobb.in/SWGf7fWhsSim

D14: https://pobb.in/yeATWsUea_vA

D15: PoB of Video

Further improvements:

lvl 30 aspect of the crab (+4%physical damage reduction)

+3 corruption implicit chest (~7% more damage)

lvl 100 / 2x 1p voices and then 3 skillpoints in the large minion damage cluster (5% more damage)

Better Convoking Wand (higher increased minion damage)

Other suggestions are very welcome. I probably wont change the build any further. I am pretty happy with the build and the golem buffs by GGG.

Alternative Golem Approach is Carrion Golem of Scavenging Elementalist with Triad Grip Conversion to lightning with Doryani's Prototype Mercenary Abuse (have not played, but heard good things about it)