Haven't got near S-Rank from witmaxxing with all SRs/welfares. This is my current best one.
Tried gutsmaxxing before but it's fucking hard since the total statgain from guts is lower than speed/stam/power. Wit is the lowest but it recovers your energy.
No Riko/Tazuna is doable but current career rng easily fucks you up with mood down. The patch should make it easier.