I would do pure 20 monk.
PDK w/ Greatsword (
Eidolon of the Shadow augment devotion (level thf henshin with staves and IC:B swap to IC:S at cap)
Stats Wis > Cha > Str, but enough Str for feats.
Ninja Spy + Falconry 60% helpless wisdom to hit/dmg/trance
LD as primary tree for DC + Rally Cleave, FoTW as secondary tree for Boulder's Might, US as third tree for renewal + mantle + temp hp strike when you need some extra absorb.
Summer 7 Winter 3 with ins/qual devotion belt and slavers wis/ins wis augment/qual wis/armor pen ring. Basically
this gear set, but with cloth, and of course slavers ring and augments based on randomness of changestone!
Summer +5 and Tactics boost +9 and PDK + LD stat surges and CKT tactics bonus should bring QP up to no-fail. THF + Strikethrough should give you unlimited Ki.
Shadow/Reaper Boost Double > Dire Charge > Legendary Rally should just AoE delete groups with that amount of helpless damage, then QP to clean up. It's better than Mass Frog/EiN though because that combo is on only a 30 second cooldown.