Frost Blades chaos/poison build help

So I was trying to come up with something unique (i think anyways) and came up with trying to use Frost blades with the cold converted to fire via a Pyre Sapphire ring along with 2 consuming dark daggers to then convert the fire to chaos dmg.

Anyone know if it's even possible to scale the dmg high enough to clear anything higher tier?

The idea was to do a crit based build and having a burning/poison/bleeding DoT.

Consuming dark as attacking weapon? Poison builds with consuming dark are nice, and I also saw one ZiggyD poison-consuming dark build using freezing pulse with pyre (although he later switched to magma orb) so something similar to what you think of but.... apart from this utility use for dmg conversion, I never saw it being used as main attack weapon. Maybe if you use assasin and make CoC build using this dagger it could make sense, but pure attack-based build? Nah... any rare weapon with some way to inflict poison will outshine it.

My suggestion would be to either use rare with this item:
http://pathofexile.gamepedia.com/Snakebite

...or if you really want to use some unique for your build, dual wield this item:
http://pathofexile.gamepedia.com/Bino%27s_Kitchen_Knife