To LST or not to LST?

Since the plants are outside on the balcony, there's no need to apply LST. The sunlight fully penetrates the plant, but that doesn't happen in a tent under artificial light, which is why LST is done there. I generally wouldn't aim for topping or fimming with automatics, but it's definitely doable with completely healthy plants. I recommend letting the automatics grow naturally on the balcony. However, you can definitely try LST if you like. And if the plant is very healthy during that, it will handle it very well and give you a good yield.