on a skorn setup, 160k dps are easily enough to clear mp10 act1 efficiently if the ehp, skills and playstyle are correct.
like koston said, get one additional pickup radius slot and get more armor. some more res would also be good.
the biggest issue i see is your skill setup:
zombie dogs and sacrifice wont help you that much during fights because you cant cast these skills without interrupting your bats channeling, so get rid of them. replace them with big bad voodoo (slam dance) and either hex or paranoia (with the respective damage rune). voodoo in particular really helps with nasty elites.
additionally, umbral shock on your spirit walk is utter garbage. replace it with honored guest to help with mana regen.
with these changes, you dont need blood ritual anymore and can replace it with spirit vessel. this passive allows you to survive much more elite packs. on top of that, it means that you can use spirit walk more frequently, for cc immunity and mana regen.
also note that wd is a class with very powerful, but resource-intensive attack skills. the consequence is that positioning is MUCH more important on wds than on other classes. having some experience with wds will definitely help you with this positioning, its a matter of practice. so dont get discouraged if you cant play your wd to the max of its capabilities yet.

I made the changes from dogs to see if I like it better but I already do run spirit vessel as a passive...