500K EHP seems to be a good target. (your WD is at 440k right now, from d3rawr.com)
Your all-resist and vital are low.
get a better zuni boots with more vital instead of fire resist.
re-craft bracers for all-resist.
your vile is low on INT. Craft a better one.
Zuni chest can have more INT and armor...
skorn can have more crit damage.
if you have a barb, just use barb to farm DE in VotA... it's fastest way. No one can beat the speed of a jumping barb in VotA. MP 5 is good...
rotation of skill?
that's what i do:
1. locust to lure white trash toward u. if there is an elite pack, lure them toward the pack.
2. run into the elites, Hex one of them to lock him down in your CoB range.
3. put down BBV.
4. spam CoB till the elite die...
BTW, I don't use horrify and I use BBV. I use vessel for 2nd life instead of JF passive.
once enemies are agro'd im kinda scared to stop using CoB
scared in softcore?
Imagine doing this in Hardcore....
Just for reference, here is my build I use in HC:http://us.battle.net/d3/en/calculator/witch-doctor#YcUdiQ!eTY!bcZaZY
You can replace the lifelink dogs with locust if you want..or BBV slam dance for more damage in SC.