You never “have” to do LST. Overdoing it will harm yield rather than help it. Trimming will be necessary at some point.
I keep it simple and trim only as necessary to maintain good airflow within the plant.
Welcome to the community , Plants look great. I would definitely top the plants one time. Try to keep it simple The first grow .
Good luck
All you have to remember is that the plants will double in height once in flower so tent height is how/when to judge.
Thank goodness appreciate the response I will take the advice and keeping it simple will keep the community posted thanks for the welcome happy 420! From the Midwest as well Minnesota didn’t want to lst glad I don’t appreciate the response!
Another benefit of LST is to expose the lower bud sites