Ng+

So I just finished my first run of the game, and I got the bad ending because I had no idea how crucial the last few quests actually were to the ending. Im used to making choices in the final quest like most games but this game aint like most games. Ive already started a new game plus to play it through again and get a better ending, except I think im veerryy underleveled at level 36. Im still very early, and I really really want to play the dlcs (havent yet) - should I just make a fresh game or keep on with the ng+?