Gujarat

Lalbhai Dalpatbhai College of Engineering, GH Patel College of Engineering and Technology and Parul Institute of Technology are top CSE colleges in Gujarat.

You need to give IMUCET exam conducted by IMU.
The last date has been passed out to 8th May so you can prepare for the next year as IMU conducts its CET twice a year
For further assistance, you may check:
imu.edu.in

Dhirubhai Ambani College.

Colleegs in Mumbai:
NMIMS-Mumbai
Colleges in Pune:
Symbiosis
Colleges in Hyderabad:
ICFAI Business School

You can go for CA or MBA provided you do MBA from a good college by giving entrance exams like CAT, CMAT, MAT, etc.

Top colleges in Ahmedabad for engineering are - govt. colleges (LD & Vishwakarma), private Nirma University, PDPU but you can't get admission in prestigious college as in management quota you might need to pay 10-15 lakh donation and in other colleges you can appear for counselling try your luck otherwise meet with the trustees of good college 2-3 days before admission ends they will admit you to fill seats without any donation (keep it as an option).

Apply through ACPC, take part in counselling and hope for the best, other option is to take admission via management quota( note - you need to pay huge money if you take admission by this too early, wait for 2-3 rounds then they will admit you at low fee in average college).