(edited by Bellamy.9860)
dagger/ vampiric concept
I am a big fan of 20+ Blood builds, so yours looks pretty fun to me.
I actually dislike the staff for power builds, and I usually only use it for keep battles in WvW. Instead, I use axe with the 20 spite trait that increases its damage. Axe #2 is great burst after you stack vulnerability, and the channel procs your siphons like crazy!
My build is 20 in spite for the axe damage, 15 in curses for fury on DS, 20 in Blood for vamp prec. and bloodthirst, and 15 in soul reaping for the last gasp trait which provides great survival.
My stats with only food are 3100 atk, 56% crit, 45% crit damage, 2700 armor, 22000 hp, and 360ish healing.
One thing that I like about your build that may convince me to change mine is the warhorn 4 second daze… I havent used that trait before.