Yep, Boa too small for 767's.
As they phase the 752 out, I do wonder what they intend to use to BVC. I know they do it occasionally with the 738's, but these are often diverted or have to do a fuel stop if the conditions aren't right on BVC. I know they had to do refuels at Faro several times last year whilst operating the 738's on that route. Or would that no longer be a problem with the new MAX with several hundred miles more range?