TCNJ has an excellent reputation within NJ. If he does well, then the in state schools (RWJ, NJMS, Cooper) will take notice. He will need a GPA > 3.7 and MCAT > 514 to have a decent chance. Going to a tough school like GaTech where his GPA will be deflated doesn’t make sense.
He will undoubtedly have to take higher level science classes in lieu of the dual enrollment/AP credit. This will look better on his transcript.