It took me over an hour, maybe an hour and a half to get all 5 feathers for the second part of the quest. After that you have to fight the boss which had 12 million health and really requires at least 3 people. A tank, dps and one healer.
The reward? A whopping 220 rep, or 240 rep if you're human.
Just isn't worth the trouble. Way to much risk and time necessary to be invested for such a menial reward.