Doh! Looks like I misread your question, Helmut!
Now that I've re-read your question, I would say that it makes no difference as far as the mechanics of linking and redirects are concerned. Either way, changing the LNAB will result in a redirect for the original profile ID.
I now see what your concern is - if you code the old profile ID into your bio, you may need to update to a new profile ID if the LNAB is corrected. And that could mean a lot of work down the road!
So maybe it IS better to change the incorrect LNAB to the correct one BEFORE adding your links.