Determined_To_Succeed on "Should I reschedule AUD?"

Okay, here is my current situation:
-Scheduled REG for July 6. Unfortunately I can't move that day. Also I do not feel adequately prepared to pass.
-Currently scheduled AUD for August 17, the last date I can schedule it. I plan to study it for 6 weeks, starting from July 7.

Here's the wrench in my plans: I have go to on an audit trip from August 5-9, which is the week before I plan to take AUD. With that in mind, should I still stick with the August 17 date (6 weeks, with 1 week being on the audit trip)? Or should I move it to August 3, which is right before the audit trip (4 weeks)?