Thanks for your response Youngjames.
Planning on taking my GMAT again, hoping to get into the 700-730 range, but we'll see. Obviously my score will reflect what tier of schools I will do further research and apply. With my current score I havent given Kellogg, Wharton, Stanford, or Booth too much thought as I feel I'd be less likely to be admitted. However, I admit I might be mistaken, and that's why I wanted to start this thread.
As far as Notre Dame goes, its a mixture of their program and family ties. In addition, they offer $10,500 of scholarships (annually) for Peace Corp alumni. I dont want to say I see ND as a backup school, because I am really intrigued by their program, but I would be willing to say they're not in my top 3 schools.