Don't do it. And for the record, you're thinking dungeon set 1, not tier 1. Tier 1 is, I believe, Stormrage (it's been years, so I'm not positive). Wildheart, and it's upgraded variation, feralheart, are dungeon sets 1 and 2.
If you have the three BoE pieces (gloves, bracer, belt), you can start the Wildheart upgrade quests for extra experience. For alliance, they start with a lady inside the King's room in IF. You actually just need one piece, but I forget which one, so having all three BoE pieces means you can do the first two steps in the series.