I've just about finished up with Mooshu and thought I'd try to grab the Jade Oni's garments from him before I leave,but he's a bit of a pain for me,due to his 7,500 hitpoints and Seraph and Centaur spamming which hit like a truck if I don't have a Life Shield or a Tower Shield up. Is it worth trying to farm him for one specific item,in your opinion as It'd give me an extra 180 hitpoints and an extra 1% power over what I'm currently using.
If he's giving you a lot of trouble then I'd say it isn't worth it. If you find you need the extra power and health points in Dragonspyre, then you could go back and farm the boss. Though I don't think you'll need it, since it will only give your stats a small boost.