What grift level? Do you have a torch? You can substantially boost your dps output with one of those, shifting your gear around some, and dropping your spirit gen.
Cyclone strike is a good way to get one shot. At a high enough grift level, the benefit of grouping stuff up becomes a hindrance because you're now making it easier for things to hit you.
I'm not a huge fan of Inna's - Sweeping Winds - Taeguk. It IS a dps boost, but it's annoying and makes your build rigid. Epiphany - Desert Shroud might help with your one shot problem too.
Maybe something like this once you can get your hands on a torch:
Monk - Game Guide - Diablo III
Obviously you'd need Inna's pants. You have some flexibility on the helm slot too if you're willing to give up aughild's.
Oh, just noticed, you have practically no sustain. That's your #1 problem by far. The above still applies so I'll leave it, but you need to get a weapon with LPSS or LOH, it's basically required. 3pc Inna's and Transcendence might work for now, but that will be your limiting factor in pushing higher grifts, not your dps and toughness.