Please see these posts to make your decission:will-missing-integrated-reasoning-score-look-bad-124581.htmlnew-gmat-section-integrated-reasoning-coming-june-124438.html
It is ultimately up to you, and what you feel you're strong in. But it is the gernal opinion that you should take your test BEFORE, b/c you will be able to spend more time on the studying for the portion of the test with the 800 score (quant/verbal). It also depends on when you are applying, b/c for the first year, the new score will most likely mean nothing b/c it will be very hard to understand how the score correlates to business school success.
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