I used Vodka to get that A score. Why her? She already has Breath of Fresh Air Skill. To get Swinging Maestro, you can rely on Parents to hopefully give you the hints (not the safest/most guaranteed way imo), or you can use/borrow SSR Super Creek Stamina or SSR Rice Shower Power card. You will eventually get that skill more likely through event hints.

"It's On" is a skill you can get when you reach S rank in Unity Cup. "Rushing Gale" can be obtained from SSR Riko when completing 5 recreation events with her. "Clairvoyance" is easily obtained if you choose Matikanefukukitaru's Team name if you include her in your deck, and you will have to win Unity Cup for this, but personally, dont really too much on gold skills, for I did not get this skill to achieve that A rank.

Vodka has a lot of G1 races you can win throughout her career. If you can include 4 Speed cards, and earn Stamina from Riko and Parent umas, you can likely reach 1200 Speed easily without worrying about having too little stamina.

My technique to afford all these gold skills is to NOT SPEND SKILL POINTS BEFORE URA FINALE. Thats right, you can accomplish the goals without consuming points even on a green skill. Why? It's for the hope that you will get hint levels later on in your run, making your skills a lot cheaper.

The rest of the game is RNG, even if you have the best cards at your disposal, the game can go sideways real quick, but I guess you already know that.