That is my build i would take mantra conviction over healing anyday. If you don't want to use conviction use dodge mantra for sure mantra healing not worth it. Get two one handers with over 500 loh each and aim for 700 resists.

My build.

You could try Mantra of Evasion+hard target and Guardian's path, since you're dual wielding. That would give you an additional 30% dodge and 20% armor increase. I'm currently in A3, not quite on farm status but almost and I've found this to be very effective especially since fully buffed I have roughly 65% dodge chance. But to be honest, work on your LoH, try to aim for ~800 which shouldn't be difficult I bought an ammy with 642 LoH for about 200k with dex/socket/crit chance to boot!