B.Com

Yes, it is a great decision. You will get a lot of options after that.

Chitkarar and CCS are better as you would pursue it from regular. In case, you want to pursue it from distance then DU SOL.

1. M.com
2. MBA
3. PGDBM
4. CMA
5. CFA
6. CS
7. CA
These are some of the short term programs in law, that you can consider pursuing:
1. Intellectual Property Rights and Patents.
2. Diploma in Labour Laws and Labour Welfare.
3. Diploma in Corporate Laws.
4. Certificate Program in Cyber Laws (CPCL).
5. Diploma in Conflict Transformation and Peace Building.
For related institutes, you can refer to the link mentioned below:
https://arts.shiksha.com/diploma-in-law-colleges-in-delhi-ncr-categorypage-9-33-1303-0-0-10223-1-2-0-none-1-0#cateSearchBlock

DU is the best university in our nation and doing any course from there means, it's a big thing. So, according to your questions both the courses have futuristic scope and placements are okay.

Both the courses are good and have almost equal opportunities, but both are of different fields. For better opportunities, you will have to do Masters also. It totally depends upon your area of interest.

Why you want to give up CA? CA is the best option for a commerce student. It is a professional course, so it is quite difficult to clear it at first attempt. If you are interested in doing CA, you should go for it. It will give you a bright career.
All the best.