Take the practice exam no doubt. Take it, get a feel for how the test works, and get owned by your practice exam. Then study your weak spots, cram cram cram, until about 2hrs before the test. Then relax relax relax. I play rockband before and scream paramore at the top of my lungs. Nothing gets rid of anxienty and stress like a little Crush Crush. Anywho, you should definitely take 1 practice exam as you don't want to feel surprised on the exam, that will throw you off your game, and we all know that being thrown off your game in the middle of the game, well, isn't a good thing. Don't stress it, just prepare the best you can, and be ok with that. I tell myself going into the exams that there is a good chance that I will fail this exam, and I am ok with retaking it because most people do. This also helps with test anxiety I think, because when there's an answer I am not 100% positive on, it doesn't phase me because I never had an expectation to get even a vast majority of them right. Good luck on your FAR exam man, FAR popped by cherry too. Oh, and as far as Becker practice exams go, I was in the mid 60's when I took my Becker practice exam literally 6 hrs before I had to sit for the exam... and I got a 97. So don't stress the practice exam either (that's quite an ironic thing to stress about anyway isn't it?)
FAR: 97 AUD: 97 BEC: 88 REG: 97