General Medicine couse is very good in UCMS. I suggest you ask current students as they wil be able to guide you better
I can help you with the rank range as in per previous year cut off for round 1 was -
Maulana Azad Medical College, New Delhi - 29710
University College of Medical Sciences, University of Delhi, Delhi - 41223
Vardhman Mahavir Medical College and Safdarjung Hospital, New Delhi - 40588