Degree

Yes, you are very much eligible to do this course. It also has good opportunities.

The following are the options after completing the BCA.
1. MCA through NIMCET JNUEE MCA & DUET
2. MBA IT
3. M.Sc. Data Science
4. M.Sc. Computer Science.

Yes, there is no stream restriction as such in the field of law.

You can request your department for some exemption. Also, some distance universities allow lateral entry I. e to complete the remaining course through distance mode. Many state open universities and IGNOU have provisions for lateral entry admission in the 2nd and 3rd year. But these lateral entries are subject to a certain conditions like time limits and another requirement of a particular university. For e. g Uttarakhand Open University allow lateral entry in 2nd and 3rd year in B.A. Course with certain conditions.