International GPAs are not computed by simply setting them to a 4.0 scale. Big research unis such as MIT will have experts who can tell what your grades actually mean. They might even have people from your country in the department, who understand how your grading system works. Take a look at WES guidelines, btw. I don't expect them to be very accurate, but it'll give you a good idea what to expect.
I would advise you, however, to work on your GRE Verbal... You want to shoot for over 600. You have more leeway than an American applicant there, because English is not your first language, but it's still good to have it high enough to convince the adcomm you'll adapt to American academia quite well.
In any case, as has been repeated in this forum over and over, research experience, LoRs, the SoP and writing sample (if one is required) are by far the most important elements of your application.
ETA: Be sure to mention the scholarships somewhere in your app (awards section, CV, whatever), noting the amount and the fact it was the maximum amount available.
You're sending transcripts, right? Does your diploma grade appear on your transcript? Does your MA entrance exam appear on that program's transcript?