CA

Solve previous year questions given in scanner. And, practice from ICAI Study Modules.

Just be calm and revise study material provided by the ICAI. Best of Luck.

Practice the modules given by ICAI. And, do questions from scanner and past year question. All the best.

Yes, you can do. But, your articleship will not be started.

You can join CS if you have interest in Law.

First of all, your question is wrong there is not any college, The Institute who is governing CA is ICAI. This is not a 2 year course. Level of this courses are:
1) CPT
2) IPCC
3) Articleship (3 year)
4) Final
It will take at least 5 year, provided you clear all Levels in First Attempt.

There is no issue. Many students who don't have accounts background also pursue CA. In the CPT Level, you will learn all the concepts of Accounts very deeply from the very beginning.

There are different levels in CFA. The value of CFA depends on which level you reach.

You should do private B.Com, if you are preparing for CA, as it need lot of self-study. So, doing regular CA is worthless, as you will waste your time and energy in attending lectures. I will not suggest you to drop 1 year of articleship for regular B.Com, as B.Com can simultaneously be done while preparing for CA as most of the syllabus is common.

It is true that ICAI controls the results, but it's also true, if your papers have gone well, ICAI can't do anything and you will pass for sure. It's just like the cutoff. If you have scored 199 and the market requires CA you get 200, and in case you get 200 and market doesn't need you, you get 199. But ICAI can't do anything if you have answered really well and are sure of passing after the exam. So it's basically the people who are on border who suffer/gain depending on market conditions, not the deserving candidate.