Hi jaimie2i,
Whether to retest or not is a largely personal decision, because it sounds like you are pretty burnt out. That being said, you feel pretty confident in the material right now. The fact that you can sit a test and get notified of your score now before selecting whether or not to keep it is a huge game changer from the past. It means that there is absolutely no reason for you to not retake the test. My advice is to take 2 weeks off with 0 studying, then study for 2 or 3 weeks and retake it. You could reschedule the test for a month from now and spend your next month that way. All you are risking by doing this is the $250 fee, because you can simply cancel the score if you are not happy. You have a ton of time before your applications are due, so there is no downside to doing this in terms of distraction. Honestly even if you barely study over the next month, you should still retake it because you may surprise yourself (especially being more relaxed, because it sounds like nerves got the best of you this time). You have a solid score already, so taking it again should be less stressful. Worst case scenario you stick with what you have!
The fact that you are applying to Masters of Accounting programs means that your quant score, and not just your overall score, is pretty relevant. This also depends on your work history. If you have worked in finance or some profession that requires a lot of number manipulation, then there is less reason to be concerned because you have kind of already "proven yourself" to these programs. If not then it is a bit more important. But either way they still would ideally like to see a solid quant score, and there is no significant downside to signing up again, so there's no reason not to sign up and drive to a test center one day a month from now

I hope that helps!