I dont think you need to do anything at this point. You won't need to start any LST until the 4th nodes start to develop. The leaves look great and you're doing well for now.
From what I've read its beneficial to flush. It helps break down the chlorafil and it would help the magnesium be absorbed to make the smoke smoother. I was just wondering what week people start to flush in a wedding cake auto. Its a crop king seed and its my first grow ever