3 man discordway

In places like Plains of Jarin that is filled with stupidly long annoying hexes like Crippling Anguish.

http://www.gwpvx.com/Build:Team_-_Discordway

using Curse Resto, MM protter, and Smite Discord. Would that work? Or is it required to use 2 healers?

I am using Ranger Dagger pet.

Builds are generally posted in context of a full 8 person team. Running two near full healers in a 4 man area is a waste. Use your judgement. If you have too many heals and not enough hex removal, take out some heals and add some more hex removal.

Also, Discord is generally better designed for casters so I wouldn't run it on a physical anyway.