Good Lord! Your post got me worrying. I've only been to the U.S. twice and for week long stays and I didn't take nearly as half the documents you are taking with you, except the hotel booking and the flight itinerary showing the outbound flight back home (which they didn't even ask me to produce). At the time I was a student and I lived with my parents. Maybe you're worrying too much? I'm visiting again next year and I understand that horror stories on the news (especially since the new administration took office) are really anxiety-inducing.