QN: how many days before to do the last full-length test

What worked for me (710, Q46 V42, 1st and only time) was:
Full test: 4 days before.
Quant test: 2 days before and 1 day before. I still needed to work on my rhythm then so I used each occasion to solve 41 quants at a time.
YET: don't do any on test date! You'll burn out and learn nothing new.

hope it helps.

When are you sitting tennisball? I plan to take GMATPrep each of the 3 days leading up to the exam. I think repeats will boost my confidence and affirm my conceptual knowledge.

Besides, I think on test day, your adrenaline will be pumping. Your drive can't possibly be "down" for the real thing.

Dec 5th for me.

I won't do any test at least on the day before the exam. and you better don't do it. you can do some practice questions just to keep the brain active every day, but i don't recommend full test the day before.

I probably will do my test on Sat and get ready for Tues test. I'll do one on Sun if you want to, but this is flexible.

Well,

I just have my own theory about tests. I just did, and recommend, a whole test in every of my last 4 days (2 Powerpreprs and 2 GMATPreps). I also took one challenge each of those days and even one the same day as GMAT (I had GMAT at 16:00). The idea was to feel like the exam and to have your mind as used as possible to GMAT's feeling and, especially, be used to time and nerves management. The main problem is that a bad score can drive you down your self confidence, but that's a risk that it's worth it (at least it was for me, 760).

But I guess I've been always one of those guys who must study until a few minutes before the test. And well, when I finished the test, about 20:30, I was exhausted.

Good luck.