Need some help on my build

I know my build is kinda crappy. I have been trying out my own melee/pet hybrid Elementalist using Shaman/Demo classes.

Here is what I got so far. I am thinking of respec my skills for more durability.

I also like to know if Chaos strike is better than Oleron’s Might? I am not using Primal Strike as it is not much of a nuke at this level for me. It has helped me cleared a lot in Act 1-2 but starting to get harder. I removed it and use savagery and feral hunger which helped me facetanked a lot of mobs.

Any tips or pointers would be helpful. I am also still fiddling with constellations as well.