HI Kaushikghosh,
You certainly have plenty of print materials to keep you busy for some time. However, many Test Takers who use a 'book-heavy' study approach end up getting 'stuck' at a particular scoring level, so it's important to keep a certain degree of flexibility with your study plans (since you will likely have to incorporate different resources along the way).
1) How long have you studied?
2) How have you scored on each of your CATs (including the Quant and Verbal Scaled Scores)?
3) What is your goal score?
4) When are you planning to take the GMAT?
GMAT assassins aren't born, they're made,
Rich