You have to choose the right path for your career guidance. In my point of view, your decision is bad. because for your cut off mark, you can get the same college and department through TNEA counselling procedure. If you provide your community details it will be better to prove my point. With the basic details, you provided I compared it with the last two-year admission cut off the ranges. Your cut off mark gets closer to the edge but within the range. So you must speak to the college management it is possible to transfer management admission to counselling it the fees is paid already.