>>536544524
100 rolls is around 50% chance. Makes sense to prepare a full spark. It's logical when you think about a single banner only.

But now you're talking about NYFuuka, Aru, 2xShupos. That's 800 rolls. See how the numbers change when you roll this much? That's not risky at all.

Bedsides, you're easily getting 40k more until BlueFes, probably more as a newfag.