@WannabeCPA09
For your study materials, it honestly depends on personal preference. Being that you are so close to your exam, I would just stick with the materials that you currently have. Working through the Becker MCQ's over and over are most likely your best bet.
I know that Becker can be quite frustrating at times, especially with all of the highlighting with very little explanation on many topics, but with the exception of IT, I feel like Becker did a great job of preparing me for BEC in such a short amount of time. Continuously drilling through the MCQ's are what I feel enabled me to pass BEC on the first try.
With that being said, although I have no experience with the Ninja Notes, supplementing your study materials will never hurt you come exam day. When I was studying for BEC, I read a lot of posts by people on here saying that the Ninja Notes were great for IT, so definitely read that section a few times if you have the time. The IT questions on the actual exam were out of left field for me, so with the exception of IT, using Becker should prepare you just fine (at least in my opinion).
Hope I helped and best of luck!!