See if you are not eligible for any other colleges then you can do so but I would suggest to go for the old colleges (if you have option) because the old colleges have a better patient inflow as a result, for a medical student the clinical exposure becomes more convenient in Old medical colleges.

Now its your choice, which you want to pursue from. There are no demerits in the new medical colleges but the patient flow will take time although you have 5.5 years of your MBBS so many things will change, so if you have no option then don't think that its not good.

To predict which colleges you can get through your NEET rank, then you can use the link below:

https://medicine.careers360.com/neet-college-predictor

I hope this answer helps. All the very best for your future endeavors!