This is great progress!

Splitting your tents up is how most growers go! Look at this amazing tent!

RE: "Those bend marks are from use of the LST clips. They seem to really have this fattening impact on the stalks."

Do the 3D printed LST clips have a round shape near the plant stems or is it straight?
Hard to explain in text.. but maybe you could print them with the arches rotated 45 degrees so it's more rounded?

Great green growth you have there! So exciting, and there is nothing like smoking your own home grown! Quite the experience!

EDIT: One more tip: Protect your eyes! https://www.growweedeasy.com/indoor-growers-consider-your-eyes