Dear workerbee_mba,
Depending on what your GMAT score is, you might be competitive for your target schools. You will need to be in the competitive range for these programs, ideally 720+. I agree your lack of community and extracurricular activities since college is a concern and your GPA is another potential weakness. Thus a high GMAT score would help to balance those out. You also need a strong package--great resume, essays and recommendations. Generally speaking, your target schools are fabulous but they are all top 15 programs making them highly selective. I think it would be prudent to add a few reasonable and safety options to your mix.
Good luck,
Lisa