Kota

RTU university and Modi Institute are the best

b tech from kota don't fulfill your requirements , you need to do b.tech from IIT then you get good job because salary accounts so IIT is a good college to do b.tech . choice is yours

You should try Allen once more.

You can ask the institute to provide a data on the same

After taking up NATA you can enter an Architecture college, you need to take up Medical entrance exam for Government Medical College.

Dear don't go for coachings they will kill Your real self

I don't think that you should go Kota for JEE Mains preparation because in Delhi only there are so many institutes. I would like to tell you one thing that everything depends on your efforts and your self study. Any of the coaching is not responsible for your selection because faculties show you the path, they guide you. now it depends on you that you have to walk on that path or not.
So the conclusion is join any of the best institute in Delhi only and give your complete effort you will easily crack out your JEE.

The best coaching is in Kota.