Reva University

I will prefer you to take admission in REVA, as this college is far better than the Acharya College. As in the REVA, you will have a culture of study and innovation. All the students there are always involved in any sort of innovative actives and the teachers also support them, but this is not in the Acharya College.

Yes, it is a good branch to opt in Reva University and faculty of this college are well qualified. Reva is giving good placements to almost all the students of the college.

REVA University is autonomous whereas RISM is Bangalore University affiliated.

1st Week of October 2018. You will get the college admission order after 24th of September 2018.

Yes, you can get admission. NATA is not mandatory, you can get the architecture college from JEE also.

REVA University is best for MBA in terms of placements, academics etc.

REVA University is better in terms of placements etc.

Bangalore University is Karnataka Board University. It is government university and hence it will get recognised everywhere. Reva University is a private university and newly established, so you can prefer Bangalore University. Hope this helps you.
All the best for your bright future!

They all are the good colleges for the MCA, but according to me I would like to suggest you that PESIT and Cambridge are one of the best institutes, and it's up to you in which college you want admission for basic information regarding them check the official websites of the colleges about each and everything of them like placements and education facilities that will help you to decide in a better way. Good luck.