a7v best dual back button focus settings (portraits)

I've been using bbf since the dslr days, so it's muscle memory at this point. I just got an a7v and I see people saying bbf isn't necessary anymore, but I say pfft.

As a person with chronic indecisiveness (think Chidi from The Good Place) and adhd, I have a hard time figuring out how to set up a new camera and I haven't had a camera in a few years.

I'm looking for any suggestions for a dual (or even triple) back button focus setup for portraits that also works with general photography (I'm doing a street photography side project with a friend as well).

I'll try your suggestions and see what works best for me. Thank you!