NEET Scores

You can get even Government College, if the things go well.
450 is fabulous number, with this you can get MBBS in minimally chance, but BDS and other AYUSH Colleges, these are also good in comparison with MBBS. They also have bright future. All the very best.

You can get admission for bioengineering in MIT College with your NEET score.

Dropping a year will be well worth if you are determined that you will crack the entrance next time with good marks. Remember, you may regret about not giving entrance exam again only for 1 or 2 years; but there is a risk of decrease in marks next year if you didn't study well or your luck turns wrong. If you want to give a next chance, my opinion will be you should join a good coaching classes focusing admission in IITs or AIIMS. This will hold you set in regular studying. And select one best option, whether to give JEE or NEET.

Speaking of general category, 500 marks should be obtained at least to get admission in any government medical college. Higher the marks, better are your chances.