I'm trying to think of a build that would heighten the chances for killing blows... in preparation for Midyear Mayhem's 50 killing blow achievement. I won't have much time to PVP- so, stretching my killing blows throughout the week isn't an option. Yes, I know I can hop on an oil (and I plan to do that) but what's your suggestion for armor/weapon sets to help achieve the most killing blows? So far, I can think of three options that will include Vicious Death (to assist with killing blows):

-Silks of the Sun, Vicious Death, Grothdarr (constant, reliable DPS... more for locking down enemies and dropping elemental storm)
-Burning Spellweave, Vicious Death, Valkyn Skoria (proc-ish build that has good range)
-Infallible Aether, Vicious Death, Valkyn Skoria (heavy attack build that applies minor vunerability)

I list a 5/5/2 build on each- because usually, I'll have DW on my front bar for melee (flame lash, burning talons, fossilize) and a destro staff on my backbar for ranged abilities.

Any suggestions?