best place to lvl up?

hey guys im having a hard time beating the wyrms and dahag so im guessing i need to lvl up more, my highest is 47. I have disabled the machine so i can weaken Dahag but his unbelievable amounts of BA he gets thanks guys 

U need to do some other quests Before u can defeat dahag

ive done all the quest except the wyrms thats the only 2 side quest left