Vill-V's Helical Contraption w/ So Few Crystals - Pulls & Shallow Sequence Run | Honkai Impact 3rd

So... I was thinking of skipping this one because of Herrscher Elysia in v6.0. I had so few crystals because I tried pulling for Mobius during her rerun without luck with 5,600 of the crystals. Still, saving them completely now, because my last encounter with a Herrscher in the gacha system was terrible.
The only real money spending I've done is for those monthly crystals and Knight BP.
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What I've learned after this is to always pull for valkyries as soon as the new version is released in your region.