your rank would be from 5700-3300 in engineering as per the assumptions and 7800-5100 in medical.

refer to link https://collegedunia.com/news/e-67-comedk-2018-rank-predictor for information and 

https://collegedunia.com/exams/comedk-uget/rank-predictor for rank prediction.

however you can even go for several branches, if your college doesnot bind you by your marks.

try appling for biotech, CS, IT as they are nowadays most into the crowd however meechanical and civil are some you can enter if you're interested.

all the best