It is totally worth it. The sooner you start it the further you'll get. You want to arrive in nodrilund before you are level 58 because you get a teacher quest to receive your 58 pet. I decided to do it later, and I forgot about it and my other wizards all got their pets and I didn't. So I googled this and found out I would have to beat nearly all of grizzleheim in a couple of weeks.If I wanted that pet soon. So DO NOT skip over it "for now" do it as soon as you can, you may die but never give up.