Hello student yes you've a very well academic background you'll definitely get admission in top MBA colleges if you've score good marks in CAT entrance examination and PI. But if your first aim was CA and you've clear till 2nd stage with good score I'll suggest you not to Quit now its okay if you get demotivated for some time but CA course need lot of patience and hard work you're just few step away to become a chartered accountant so ask yourself if you really want to quit or its something else.

Feel free to comment if you have any doubt

Good luck