500 - Q39-V21 - Real Score Vs Score at home : inconsistent

Hi everybody,

it's the first time I write in gmat club forum. I'm not a native speaker.(Native language : french). I want to share my experience and I need help to analyze my scores.

I passed the GMAT the 11/08/11 and I scored 500. I'm not happy with this score and I want to retake it. My goal is 700.

I think my mistakes I made were :
- During the week before exam I go to sleep minimum at 2:00am thus the day before exam I slept only 4 hours ( I need 7 hours to be operationnal) : the test was at 9:30am and even if I go to sleep at 11:30 pm, it was impossible for me to sleep before 2:00am.
- I planned the exam in the morning (My best scores I did was in the afternoon)

My last scores at home was (in a period of 1 month approximately with AWA) :

CAT 1B GMAT Manhattan 12/07/2011 580 43 Math
CAT 1B GMAT Manhattan 12/07/2011 580 28 Verbal

CAT 2B GMAT Manhattan 15/07/2011 440 28 Math
CAT 2B GMAT Manhattan 15/07/2011 440 24 Verbal

CAT 3B GMAT Manhattan 28/07/2011 630 43 Math
CAT 3B GMAT Manhattan 28/07/2011 630 33 Verbal

Gmat prep 2 31/07/2011 560 39 Math
Gmat prep 2 31/07/2011 560 27 Verbal

CAT 4B GMAT Manhattan 01/08/2011 520 40 Math
CAT 4B GMAT Manhattan 01/08/2011 520 21 Verbal

CAT 5B GMAT Manhattan 03/08/2011 590 38 Math
CAT 5B GMAT Manhattan 03/08/2011 590 33 Verbal

CAT 6B GMAT Manhattan 04/08/2011 460 39 Math
CAT 6B GMAT Manhattan 04/08/2011 460 15 Verbal

Powerprep 2 06/08/2011 440 38 Math
Powerprep 2 06/08/2011 440 14 Verbal

Gmat Prep 1 08/08/2011 540 42 Math
Gmat Prep 1 08/08/2011 540 21 Verbal

Now, before to follow a knewton courses or to begin a new study plan. I need analysis of my score at home Vs real score. I know I'm not regular. Do I need to follow a courses?
Don't hesitate to give me your analysis.

How could I improve my score in Verbal?

I need a realistic plan in the next 3 month. My goal is 700.

Teoh