You'll probably get lots of different opinions on this one. I personally like to top when the plant had reached its 5th node. At that point, I'll top down to the 3rd node if it's a stretchy stain or i'll top at the 5th node if it's a plant that is more squat.
@Jay Pepe If I'm counting correctly, you're at the 5th node now - about to be on the 6th node. You can start LST at any time really. I personally like to top first then do LST on the lower branches as they grow up. There are so many different ways to go about it.
You'll probably get lots of different opinions on this one. I personally like to top when the plant had reached its 5th node. At that point, I'll top down to the 3rd node if it's a stretchy stain or i'll top at the 5th node if it's a plant that is more squat.