Good call re the cards
BTW, I do have to mention this - I'm sure your instructor will be covering it before your trip - but you would not be able to get a drift specialty out of that class from diving wrecks in NC. NC wreck diving is most decidedly NOT drift diving. In fact, I'd recommend bringing gloves bc many captains insist you ascend/descend on the line.and some of those lines will cut your hands.
Also regardless of water temps. I have found it prudent to always wear at least a dive skin covering me from ankles to wrists; the jellies like to hang out right in that 10-25 ft range... Can make a safety stop loads of fun!!! And another good reason for gloves <g>. (BTW I speak from experience, I've got a pic somewhere of welts on my arm that lasted three weeks, from the one dive of a three or four-day trip when I left the skin off!)
Hope you have fun with your dives and don't get blown out!