If you're the type of person who benefits from and is comfortable with studying right up until a big test, then I'd say go for it. I don't know if it will do you much good though. You probably aren't going to get any good last minute revelations that will benefit you on the test, you may get confused and obsess over a problem, and then that may leave you more stressed than you need to be right before the exam. Also keep in mind that this is a long test and by the time you get to the QR section you may feel pretty burned out, so you might not want to exhaust yourself beforehand.
I took my test around noon after studying for about 1-2 months. I didn't study anything the day of or the day before the test; I just took some time to relax. I ended up scoring 390 TS 370 AA. I strongly believe that I would not have benefited from studying immediately before the test. It might not be a bad idea to study the day before though, I didn't because I was kind of tired of studying.
Good luck on your test! Let us know how it goes and what you decided!