Hey Growmie,
As for when you should start with LST, the answer here is: as soon as possible. Once your plant is comfortably in its vegetative stage, it will be primed and ready for manipulation. You don't want to go too early before the plant has established a few good nodes, but you also don't want to wait around. So no it looks like you started at a great time. Hopefully, this was helpful, and remember ..." Happy Growing" and "Free your mind one puff at a time".