@Jsn3004 passing BEC and FAR is a huge accomplishment on your part.
As to your question, I bought Ninja's 4 sections. The MCQs, SIMs & Ninja Plus videos are great as supplementary materials. I haven't tried the Ninja textbooks and audio yet. My Ninja subscriptions expired in March 2017, with an option of claiming two sections' due to 2016 BOGO purchases.
I still have the 2013-March 2017 Ninja notes, flashcards, and all 4 sections SIMs'(print screen copies only) and some FAR/AUD MCQs print screen copies. I used them for notes.
At first, I tried Ninja's FAR/AUD MCQs & SIMs, but ended up memorizing the answers. So I stopped, and ended up ignoring REG/BEC MCQs and used SIMs print screen as ‘notes' instead.
I am a former Becker student, and still use my pre-2015 Becker materials. I have a complete set of pre-2015 textbooks (hard copies/pdfs), and unlimited access to pre-2015 Becker test banks for all 4 sections. I use Ninja materials for latest updates.
As to re-writing notes, it's a good strategy, it works for others, especially for FAR/BEC/REG number crunching problems. I am more like a ‘theory person', I learned through reading and watching videos, before doing number crunching questions.
I noticed you still have REG and AUD, try to read the whole REG/AUD textbooks. It did helped me a lot in passing my BLaw/AUD/REG many years ago.
CPA exam contents haven't changed that much. Thanks to Jeff (@another71), for all the updates.
AUD - 49
BEC - NINJA in Training
FAR - NINJA in Training
REG - 55
Passed: AUD (75%'08/77%'17), REG (76%'09) & BLaw(77%'99); highest on FAR (63%'11/'15) & BEC (63%'11). Credit Hours: USA(PH)-BCom'85(4yr-grandfathered); UBC-(DAP'02/'19); DC-(BBA-Acctg.'22-4th yr)=over 150 hrs credits