The easiest way to sum this up is...Jiu Niangzi was crucial for this, and here is my first Mane's Bulletin video where I was able to pull off my first SSS Clear!
Before I was able to get Jiu Niangzi, I was only able to get a score of just over 400,000 which was frustrating as there wasn't a whole lot I could do about it here. Then I got lucky, and Jiu Niangzi came not only from summoning, but also came to destroy this stage with the help of 6, 37 and Tooth Fairy. Granted, it did need a few tries to get this done after the first clear off screen, but I think I had more luck changing the Timekeeper's Moxie from Grand Orchestra (what I use most of the time) to First Melody. Being able to shuffle incantations to get the desirable ones probably was what made this easier, but yeah, this was quite the long endeavour (as you might be able to tell from the video length) as this went on for 30 turns, but I think because of this, I think it's best to timestamp all 30 turns.
If I am able to pull off a similar SSS, it may be possible to consider the Hypothesis of Exhibition and the March Creation stages, but we'll see about that. But yeah, seeings lots of videos of this and probably 95% of them having Jiu was tough for me at first, but yeah, still just very thankful to be lucky before!