The plant is doing well, flowers are getting bigger and it slowly starts smelling if the box is opened.
The height-growth seems to have a bit reduced, which I would say is okay for now.
Furthermore, I did some Defoliation on Day 72. But even if I think I did took a lot of leaves away, i'm still not so sure it is really visible on the photos.
@Zarayju, Sorry for the late answer, I was not checking here frequently.
I've bought those from Lientec-LED. They also offer a lot of DIY-Sets. Keep in mind to also order some aluminum profiles, as the heat of the LEDs needs to be dissipated.