it's not a totally crazy question.
hair is pretty much hair, just with varying qualities.
i'd say that your best bet would be to call around to some of the swankier salons and ask if they have stylists who are proficient in razorcutting.
if you're talking to the right places, they won't flinch in the least if you mention that you have african american hair.
a good salon is going to have people who are well-trained and know what african american hair is going to do.