Your life success is determined by your abilities and luck. When you are chosen for IIM Ahmedabad, you have met the minimum requirements, which means you are competent. So it makes no difference that you received affirmative action for your support.
A study was once conducted at the University of Michigan Law School to determine whether students who received the highest score on their standard test were more "successful" than those who received affirmative action-based admission. They discovered that ten years later, there was no difference in their performance and that they were all equally good lawyers.
More than half of IIM Indore students, and even more at IIM Ahmedabad, would admit that luck plays an important role. You should go to IIM Ahmedabad. The peer learning factor would be superior to IIM Indore.
A friend of mine was from a reserved category and also passed from a top B school. Everyone has these apprehensions because you will see that some of the general category candidates have some really good credentials. At the same time, some of them will have credentials below you too. Here’s what I would suggest you do:
Even if you do end up doing a job that pays 70000, you will earn more later with increments in your salary. But remember that 70000 is just an arbitrary number. With your potential to crack IIM A, you will definitely be able to secure a well-paying job. My friend was also in a similar mindset as yours but he is quite happy with his present scenario.