How long before you plan on doing the light switch? If its soon (less than 2 weeks) I would top at the 5th node to ensure all your branches are fully developed to support bigger buds. If you have more than 2 weeks veg to go, it'll be fine topping at the 6th node. By then, those tiny tiny side branches that are just developing will have had time to mature to produce those THICC colas.[/QUO
Oh yeah they're short just a little bigger than that pic at least 2 or 3 weeks to go I like them bigger.