Basha, PWD reservation is not a vertical reservation. It is a horizontal reservation within your Category. Now you haven't mentioned your Category. Neverthless, if you want to secure a seat under All India Quota, you should aim for nothing less than 600-625. This number might change depending on the college you are interested in. Cut offs change every year depending on various factors such as no.of Candidates appearing for the exam, no.of Candidates qualified, top NEET score and difficulty of the exam.