CA

Hi,
That is really a good idea to choose CA after your 12th. Generally, many people opt for CA after 10th, then they appear for CPT. Even after 12th, you can prepare for CPT. Even 12th science student can also appear for CPT after his 12th.

It would be better to pursue CA along with M.Com.

If you do CA then you don't need to do MBA and if you do MBA then you don't need to go for CA. Who told you that CA has less finance curriculum? It's completely wrong. CA is totally about finance, accounts, auditing, and taxation and you can do CA after MBA but in my opinion, you should do one of these.

Hi Avinash,
Read this article for details related to CA and its career options:
https://www.shiksha.com/careers/chartered-accountant-23

Yes, you can do both.

BBA, BBA -IB, BBA-CA these three are good. If you go with BBA, you have to go with specialization in the 3rd year of graduation, and after that you can pursue MBA or you can also go for job. BBA-IB deals with the job related to International Business. BBA-CA is related to finance, so you will get into financial sector. Three of these courses are best and can give you good job opportunities and good college to pursue MBA further. So, you can choose your degree in what you are interested at.

Ideally, you should have started your CA journey early at 10+2 buy you are still eligible to become CA even after MBA.