Same as previously posted I would recommend against combining.
Same as previously posted it severely limits your school options and not only that….the reputation of the schools in question have been less then stellar.
17 is very young.
More education is always a good thing.
Various universities have excellent flight training departments that allow training through to all instructor ratings and teach at the University.
After completing a 4 year degree they’ll have their FAA ATP also.
I wouldn’t be in a hurry with EASA conversion.
Many US (and foreign) carriers require a degree.