Dear Experts,

A] Background :
1. Indian Male 35 Yrs Old Engineering Graduate
2. More than 13 Yrs of rich IT experience
3. Worked with some top IT/Telecom organisations
4. International Exp of > 2.5 Yrs

B] GMAT History :
GMAT Exam 1 : Oct 2009 : 500 [V 19, Q 40 - Could Not Complete The Section]
GMAT Exam 2 : Dec 2010 : 490 [V16, Q 42] - Did not prepare for the exam was quite busy with office work
GMAT Exam 3 : Dec 2012 : 620 [V31, Q 44 - In all mock tests scored >=48]

C] Verbal :

I completed OG 10, OG 12, OG 13, Aristotle RC 99 [80% completed but was unable to apply the strategy in the book - passage map], Aristotle SC before my last GMAT exam.

RC : Weakest, weak in primary purpose, inference, in order to questions. Accuracy 30-40 % only. I am unable to devise a proper strategy for RC questions. KINDLY HELP !!!
CR : Weak in assumption, bold face, flaw in reasoning, logically complete, must be true, evaluate questions. Accuracy 50-60 %. KINDLY HELP !!!
SC : Weak in parallelism, pronoun, tense, meaning questions. Accuracy 60-70%. KINDLY HELP !!!

D] Quant Timing :
How to improve my quant timing. I gave more than 10 mock tests before I appeared for my last GMAT exam. KINDLY HELP !!!

E] Quant DS :
I am trapped with the language of the question posed. KINDLY HELP !!!

I plan to re-appear for GMAT on 25th Jan 13.
Do I have sufficient time to move from 620 to >=700?.
What all study material/tests should I cover?.
Will I be able to cover majority of bschools and join in 2013?.
I do not want to delay my admission to 2014.

Best Regards,

KW1.