Some of your questions can't really be addressed in this limited format, but I can weigh in on the question of timelines: if you're applying to a top MBA program, the deadlines will either be in early fall (September-October) or, second round, early January (as an international applicant, you wouldn't be able to apply in Round 3).

I recommend beginning your applications as early as March or April of the year you're planning to apply, because you want to leave time to visit schools, do comprehensive research, develop a strategy and think through your post-MBA goals. So if you plan on applying in Fall 2017, for 2018 intake, you'll want to have your GMAT out of the way this year, and be able to really dig into those application packages starting early next spring.

The other information you're asking about, such as tuition breakdowns and post-MBA hiring, can be found on MBA websites such as Bloomberg, on a school by school basis.

Good luck!

These questions are actually best researched on your own -- reaching out to alumni to discuss the details of their experience in light of your own interests will help you get the answers you need.