Just bother with the rainbow's equipment flowers, as long as you can afford them. As for gold ones, no.
Equipment flowers are those with the blue outline, while skill flowers are those with the red outline.
Alright, thank you.
Also I just realized, I started playing the game ~2 weeks after Rainbow Rose's Reissue so I barely missed out on her Blooms. So when I Rarity Growth her, she's going to be 1/1 and I'm going to be paying an extra 105 crystals .