Topping very bushy plants with low node distance

Both of you, thank you for your answers. @Creepy_steve You are right, I did lower the lights by a significant amount and dimmed them down to cut some growing costs, since these days, the energy prices are raising up quite high. I think i will top them now and start the LST right away, I want an even canopy to fill out the tent, as long as I get a lot of colas which receive plenty of light, I am happy! Thats why I am trying to keep them short and wide. @GrowingGrannie Thank you, I will cut at the appropriate node, the thing with these plants is, these seeds came from weed I had bought a while back, there is no way yet to tell how many of them are ladies, or gentlemen. I did some research and found out, that you can get cutlings until preflowering. If I do it later, I will not waste as much resources, if they come out as male. Thank you, happy growing!

To my way of counting, you now have 5 nodes... you can top between the 4th and 5th but if you wait until you have a couple more nodes, you could actually start a clone from what you cut off the top of this one... just sayin'! Good luck!