MBA Programs are always looking for candidates with diverse profiles. So do not disqualify yourself from the race before you even start. Let the committee decide what they have to. When I was at Yale I studied with veterans, small business entrepreneurs, civil servants, school teachers, young students, etc. Do not judge yourself prematurely. If you have the basic qualities required by an MBA program and you are surrounded by the right kind of people like Dr. Hubert Silly who can advise you, then everything becomes easier. When I was at the MBA Center I met people who were not that different from the people I meet at the day to day work. Yet, not one of them was not accepted by top MBA programs. This just goes to show that all of us have the capability to be in such programs. We just need to be surrounded by the right kind of team and people like the team at the MBA Center.
Another piece of advice: do not underestimate the GMAT. Many people who have PhDs and have worked in very complex concepts and projects believe that the test that is a replication of concepts learned in middle school is an easy task. They need to keep in mind that they have not been to school for years and the GMAT is actually quite tough for non-native speakers of English.
Finally, the MBA admissions are difficult. You need to do everything in your power to align it in your favor. One of the most powerful assets that you can get is the support of people like Dr. Hubert Silly and the MBA Center team. They were essential for my success, allowing me to get into a top ten program and also avail a sizeable scholarship that allowed me to make my MBA project a reality.