Jay,
Two suggestions:
1. You should 'interview' potential instructors first to see if
he/she meet your expectations. In setting your criteria, I would
strongly suggest putting safety awareness on top of the list. Rick and
I were lucky enough to have one who was extremely safety oriented. It
may be even more important for your son who has been flying since
birth. He is so familiar with flying and may not have enough 'fear'
and 'respect' in his heart.
2. Good chemistry between a student and an instructor is very
important. You may want to let your son take lessons with several
instructors who meet your criteria and let him decide whom he likes
the best.