Hello student, 81.8% is very good in 12th examination. The syllabus for UPSC exam is very different from the BA syllabus. According to me, you should go for simple BA course rather than BA hons because it will give you more time to study for your UPSC exam. Therefore, you will be able to focus more on your civil Services exam preparation. 

 Following is a list of some colleges  in DU

1. Aditi Mahavidyalaya

2. Bhimrao Ambedkar College.

3. Bharati college

4. Delhi College of Arts and Commerce

5. College of Vocational Studies. 

These are some of the good colleges in Delhi University which offer simple BA degree course.

Good luck.