your all-resist looks good. Vital is abit low.
bracers need all-resist
Continue to craft gloves to get Crit. Dmg,
craft shoulders and ammy to get upgrades.
Firebomb + VQ passive is good for extra mana. However, firebomb itself is weak in dmg.
GI passive is recommended to get skill cooldown reduction for CoB for farming.
Try this build for farming:http://us.battle.net/d3/en/calculator/witch-doctor#YcdUih!eTY!bbaZZZ
PB bats can give you range and damage.
The lifelink dogs will give you extra 10% EHP and tank mob in the front.
2nd life is a good thing to have.
You should be able to do mp 8/9 no problem.. (well, may need to use some purple gems instead for now if your WD die too often.)
Hope you like the build.