Default [Q] Go back to stock after rooting NAE OTA?

Obviously having the official NAE Tar would be the best method, but since that hasn't come out yet, what is the best method for going back to complete NAE stock?

I took the OTA, and have since rooted and flashed custom recovery, been jumping around on some different ROMS. In the event that I would want to sell my GS4 and have it bare bones stock, what's the best method? Or is there even a method?

Flash stock recovery? Reflash the OTA?