SAT

No, October is very late for admission.

Hi,
I am sure you will, those grades are good. However, admissions will also depend on your SOP and LOR. You may take the SAT just confirm with the university if they accept SAT and check if they have spring intake or not. The sooner you apply the better.

According to the SAT eligibility 2018, there is no maximum or minimum age limit set by the conducting authority. Although the college board does not prescribe any particular SAT 2018 eligibility criteria. Students aged between 17-18 years of age mostly appear for the SAT 2018 test to get admission into colleges for undergraduate studies. Ideally, high school students opt for the SAT examination. Age Limit- SAT eligibility 2018 do not state any age limitation to appear for the SAT test. Hope this helps.

Yes, you are eligible for scholarship, but universities will assess your profile and then they will give you a scholarship.

In SAT, most extracurricular activities are considered from class 9th to class 12th.

Only if you get a very good SAT score will you be able to get a good college. Plus, you must have excellent extracurricular activities, outstanding essays and recommendation letters. No doubt your TOEFL scores must also be impressive.

Which college are you talking about?

To get admission in MIT, you need to work extremely hard to build your profile. You must demonstrate the ability to do research, think critically and creatively. SAT is just a small portion of your overall profile. You must have impeccable academics, and diverse extracurricular activities demonstrating a significant level of engagement in them. All said, you must understand that only 2-3% of Indian applicants get accepted at colleges like MIT.
Work hard.

Hi Pushkin,
It's not possible to say how much scholarship you will get. It depends on the university and your profile and also on the course.

IIIT H is the best among all. It is even better than many of the IITs in the case of graduation outcomes on the basis of computer Science. It is primarily focused on IT field. Go for it.
Cheers.