For a first time grower you have kept ontop of LST like a pro. Good work man. That is a beautiful plant structure you have created. I use the same clips as you!
If you get a scrog net it would make it a lot easier to fill out a whole tent, but once its in place you cannot move it, so its up to you. I prefer not to use a net but this grow I had to. I didn't stay ontop of training lmao

I let it get out of hand and my only option was using a scrog to flatten out my tall plants.
For what its worth I am in the Illbill camp. I remove, at least, the bottom 1/3 of my plant around week 2-3 of flower. They don't get light, the buds are whispy and not very strong, and it will take you twice as long to trim but you'll only get 1/2 of a good product. He is also right in that you will get lots of people giving different answers to your question.
Personally? If the light isn't touching it and it is BELOW my thick canopy of leaves? I remove it. Usually I only have to remove the bottom 1/3 of the plant.