The Crew Motorfest: affix recommendations, please 🙏

So, I'm new to TCM, and my novice understanding is that affixes are integral to end-game, and maximising performance/earnings.

My question is: which affixes would you recommend I choose for the following "builds"?

• Race build (presumably NITRO-focused?)
• Treasure hunting build (exploration)
• Drift build
• XP/money-making build (and best races to farm for currency?)
• Feats build (for open-world challenges)

My thinking is I have a car for freeroam for treasure and loot, race builds for various categories, a drift build, a build to do all the escapes, speed traps, slaloms etc., and one dedicated to XP and making cash.

I'm not worried about vehicle choice YET, but knowing what bonuses to have on upgrades to get the most reward for my time would be helpful.

Any additional tips or suggestions would be appreciated also.

TIA, Community!