I may not be getting you right here, but it sounds like you want to get your permit but don't want to blow a day on a super basic class to get it. If that's right, then I think you're out of luck. The NC concealed carry class is full of state mandated material, very little of which has anything to do with shooting, and none of which has to do with defensive tactics and such. Your fellow students will generally be super beginners. The instructors won't have time or ability to give you serious instruction on how to shoot better.
In your shoes, I'd be looking instead for an instructor with higher-level legal training (like Ayoob's MAG 40 or Andrew Branca's Law of Self Defense Instructor class), who actually gives solid, thorough and competent legal material. If you go to a standard concealed carry class, your instructor has less than 4 hours of actual training on that stuff at the NCDOJ, and is likely to be completely inept at conveying it. They will often just read through the book at you.
But the thing you're looking for, as far as I know, doesn't really exist. As you know if you are an instructor, if you restrict a class to experienced shooters, you still get students who don't know which way to point the gun make the thingies come out.