I will be retaking the GMAT next week

and am trying to perfect my strategy. As i have already taken the GMAT once I am in somewhat of a unique situation. My last GMAT exam I scored a 640 and was disapointed, on a relative basis i scored above 76% of everyone else, which isn't bad but no were near the score I need to be competitive in a top 10 program. My math score was right around were my practice exams were (41), however I was scoring between 40 and 41 in Verbal on my practice exams and scored only 36 on the real thing. I was able to do well on AWA and get a 5.5.
So I continued to to work on math and verbal and am now in the 700-740 range scoring on practice tests between 49-46 on Quant and 40-42 on verbal. What I was wondering, how bad would you think it would look from the perspective of the admissions if I skipped the AWA on my next GMAT exam? I think fitigue was a major contributor to my lower Verbal score as I was tired after so many hours of essays and quant. Given I already did well on the AWA on the first exam. I figure this would help me be fresher for the verbal section and maximize my chances for scorring 700+.
I know the schools take your "best" score so i figured this might work but does come with some risk.