Hi there,
Thanks for posting. It sounds like your top priority right now is that GMAT. I suggest investing in a course or tutoring to help you bring that up; great improvements are possible. For any of the 3 programs you've mentioned, you'd want 680+. And with a lower-than-average GPA, GMAT can become even more important. Otherwise in terms of positioning I don't know too much about you yet

, but certainly a strong sales person with excellent communication skills... that's as far as I can get so far. Generally I advise that applicants spend a lot of in-depth time brainstorming, and hold a brainstorming session with my clients too, to really dig deep and think about what makes you unique.... what experiences, traits, skills, etc will you bring to the program. How do you want to be remembered by the admissions committee, etc.
Let us know if we can help further!