>>719235007
Taurus Cup is quite easy because if you have Maru/Taiki/Ryan 3*, you are set as long as you get them at 9* blue, and maybe a medium sparks.
Gemini Cup is a bit of a hassle because the strongest skill for it is locked in one card only (Hishiama SR), and my copy of her is only at 2LB.

This is my current strongest parents for Gemini, still grinding for a Rudolf with 3* Blue (preferrably Speed), Long Pink, and Straightaway Spurts Sparks.
If next week I didn't get any other good Rudolfs, I'll start building my team, borrowing a three Long parents with straightaway spurts sparks on the main parents. I'll use the Opera if I'm out of borrows.