Thanks for the quick reply!
I managed to get some fields on the WP user-profile edit screen now. Thanks a lot!
So, since I don’t have those 5 months for this project and I need conditionality, I’m thinking – wouldn’t it be possible to replace the bp xprofile loop with a loop of the acf-added WP user_meta (and, possibly, for the edit view, put it in a form and update it from the front end?)
Thanks again!