I did my best to keep it to level 70 but some pieces went a bit beyond for what I thought was best to suit the weapon skill.
But you can check out the set I came up with
here.
In short I basically had a foundation of good attack and accuracy, as that is important for any multi hit weapon skill, but to assure it breaks through and gives decent numbers considering DNC's B+ skill in dagger, I added a hefty handful of modifiers including DEX, STR and just a pinch of CHR since it's the last of the mods and the least noticeable.
I hope this helps give a good idea of what a DE setup look like, and i'm sure after a few tests you can tweek it exactly to your liking ^^