Hm, build looks like something overpowered and have conveniant mechanics. Need to try.
It's OP but heavy gear dependent and level. You won't see full power of this build until you get Magrans Favor (and enchant it for +3 Fire Powers), Sun and Moon or Sungraze and Turning Wheel on monk.
So not like other builds where everything works from beginning because of Cleave, this one actually requires you to hunt specific gear as soon as you can.
if you buy proper scrolls, gear up with other standard equipment and buy summon items I am sure you could get Magran's Favor with this build around level 11-12, but it would not be easy if you play with scale up and difficulty mod.
Without I don't think it would be much problem.