Gurl do not do that! That would be cute when you and him go out, but not to meet his family. Try something a little bit more looser and flowy. Like a dress with a cardigan or a flowy blouse with a skirt/pants. And as far as shoes, I think 3in' and under would be good. You want to make a really good first impression, so they can tell him that you're a keeper...But definitely wear that other outfit when you're with yo, your boyfriendI'm sure he would love it.
I wish I could help you with advice, but if it were my girlfriend, I wouldn't care if my parents liked you or not. That is just how I am. My parents advice is considered, but whether they 'like' or 'dislike' is just opinion. I would say go more conservative. Parents like that shit. My Gf's parents are covered in tattoos like my girlfriend is, and I am to. There was no misunderstandings :).
Don't you have something a bit more cute-ish, the kind a dress that would give the impression of a girl next door type and high heels a bit less... Hight . I personally think it would give a bette impression.