Do you think CA is all about knowledge in books? Do you think life's that simple? There are things you ought to learn beyond books.
Now that you think you will pass IPCC-group 1, which has tax too.. Can you prepare, go and file a return of someone on your own?
In group2 you will study audit, do you think one can simply go to an audit, find discrepancies and report it.. Is it that simple?
Wouldn't be a nice thing to see how, whatever things you read are in actual practice?
Good professors who write good books too, are real masters in their field, they can speak out about latest developments in media, etc. as they can see the blend of theory and practicality. I strongly believe you will be a failure in that, as won't know how certain change will impact people in reality.
Will you be able to understand the problems of students who may seek your counselling about how to adjust studies with articleship? What will you recommend? Take dummy coz I did that too? Then why CA?
How will you start developing experience in teaching line after B.Com? Are you going to start coaching institute?
If you wanna be professor anyhow, take up some other course involving subjects you like... CA isn't the only course out there having accounts, tax, law, etc..
Better go do MBA - Fin., do Ph.D and become a professor..
Also, before becoming a teacher, first become a good and honest student first. You would be cheating the CA course if you take dummy and you will be risking wastage of your valuable time if you get caught.