When I first played her using my own build, I got 7/0/5. After using your build for 2 games I got 9/2/10, then 16/3/14. The Last game they got an ace on us and mowed thru our base. When the nexus was JUST about to explode, I popped ghost, ulted them, q,w,q.. and killed three of them (all at once), then chased down the remaining two with rylai's and movement speed runes/masteries. After that we steamrolled them and won. She has MASSIVE damage, but seems like most people suck with her for some reason. (btw, this game was ranked and completely even in kills before this. They had aniv, garen, vlad, lux, and irelia.)

I have an issue with the skill build - you have no spiking ability at all with that setup - while you can slow just fine with your Q and W, when chasing an enemy, you lose out on so much damage output by having a weakened Twin Fang.