> The full version of the throne name, though, was
> Khnum-Khufu, and not Khnum-Khfu.
Just to keep things steady, though the 'khfu' version is 'missing' the chick, the phonetic value is still implied. In other words it is the exact same name. There are many examples of different spellings where a glyph is omitted but the phone remains. :)
This is not a big deal, so no worries!