Hi Pavan,
You ask a number of broad questions; to receive the most appropriate answers, you're going to have to better define YOUR goals. Once you have a better idea of what Schools you're interested in, we should be able to come up with an appropriate score goal and an effective Study Plan.
There are a variety of factors that go into selecting the Schools that you'll apply to. Here are some things to think about:
1) Is there a particular company that you want to work for or industry that you want to work in? Certain degrees are more appropriate than others if you have a specific career goal.
2) What do you want your MBA to do for you?
3) Do you want to go to School full-time or part-time?
4) Are you willing to relocate? Are you comfortable with working through a program that is primarily online?
5) Are you going to be applying for scholarships?
Etc.
With a November 28th Test Date, you have almost 3 months to study, which is good. You'll have to do a lot of work though, to raise a 460 to a competitive score level.
You mentioned that you could study 2 hours a day on weekdays. What about on the weekends?
GMAT assassins aren't born, they're made,
Rich