Not a "rule" - just an thought

Newbie, like many, lol. I have a 65w led light, that's good for TWO plants (plus MAYBE seedlings/clones on the side). A Mars TS-1000, that's good for up to FOUR plants (plus seedlings, etc.), and a Mars 2000 TSW good for all you want in a meter-square tent.

I have to argue with your thought. Not sure what you have for a 65w led. I personally prefer around 100w (from the wall) per plant. I agree that the ts-2000 is just about perfect for a square meter tent. I use 2 100w and 1 165w (from the wall) (2 ts600, 1 vanderlife '1000w') in a 4'x3' tent. This should flower a few autos nicely.
The pic is caramelicious auto from marijuana-seeds.nl grown under 1 ts600.