If your looking for yield.. You have to reduce the plant count. Unless your doing a sea of green.
It sounds funny I know.
If your looking to grow out different strains and yield is not the issue,
Then go ahead and up the plant count.
Lots of new growers think that alot of plants will bring them alot of bud...
Its completely the opposite.
Large plants produce Large amounts of bud...
Once again..."LESS IS MORE"
But, if you want really thick ass big buds, You have to have the lumen output.
Thats why 1k lights kick ass!
If you want the density, You must have the intensity
Good luck!!