Hi Coneal, lights already positioned better this will be a bit more even, of course an extra light will be the easiest solution to maximise the grow space
Although I think you should still raise all others, now you just put one on a bench and the three others are still low.
Lets say if this is your light I'm just plucking an example of the web that shows zones, you want to place most flowering buds here in between that zone from 1120 to 530..
As that's where the energy is dense enough for them to also form dense buds.
Led lights are an inches game as the values change a lot with minimal movement, and that's why most also recommend wall to wall coverage as they beam energy straight down there's not much to be had if you're not straight under the fixture.
It's also why flowering a plant like the big one in the corner is difficult as you need to keep the top the right distance away so that it doesn't burn or stress, but then you also just got one cola in that zone, as the rest of the branches can't reach, they just get to dip their tops in the bottom of that zone and that's why only those parts of the plant really develop and the rest putters along.
Like in the the current situation I wouldn't worry too much about spacing them out, but rather getting all tops grouped and raised into that zone.
The shining of the light and the energy density of a light are very different things, like the one raised in the blue bucket even though it looks like it's getting shine from the full spectrum light on that branch I'd say the density it's getting there is slim.
Scoot that bench over to where the other two are, can't they all three fit on top? and then put a bucket or box under the one in the front left corner.