BBA

Hello, Going for a BBA degree in Canada is a great idea and is totally dependent on your 12th score. You may look at UBC, Toronto or York, etc. if you may have 85-90% in 12th and look at Lakehead University, University of Windsor, University of Canada-West, etc. For a percentage between 60-80, you may get a few scholarships too. You may need a budget of 30-35 lakhs annually for Toronto group and 20-25 lakhs for Windsor group. However, there are colleges like Fanshawe, Niagara which can cost you around 12-15 lakhs annually.

You may refer to following link for list of top BBA colleges in India: https://www.shiksha.com/bba/ranking/top-bba-colleges-in-india/93-2-0-0-0.
You can do BBA at VIT University. It is a good university.

BBA will give you basic understanding and exposure on different management functions which can help you to run your own business. You may get supervisory level jobs after BBA. You will have to do MBA for better career growth.

If you want to do MBA after BBA then CS is not necessary. You can do MBA after BBA. But if you have interest in CS then go for it, gain some work experience (1-2 year)n and then go for it, so that it would be better for your admission and placement in an MBA college.
Provided you do MBA from a good college so that would better for your career growth.
Otherwise, you can also do BBA only gain work experience and then go for MBA.
It depends on you.
Best of luck.

You can refer the below link for college comparison: https://www.shiksha.com/resources/college-comparison-90734-228748

NIMAS | Barrackpore, Kolkata
Prajnanananda Institute Of Technology and Management | Park Street, Kolkata
Carreograph Institute of Management Studies | Shyambazar, Kolkata
Dinabandhu Andrews Institute of Technology and Management
Eminent College of Management and Technology | Barasat, Kolkata
Nopany Institute of Management Studies | Beadon Street, Kolkata

IIPM (Indian Institute of Planning and Management) closed all its 18 campuses across the nation in October 2015. The institute made this announcement on its official website.