How many plants on average are you fitting in the 4x8s? We have a 100 light indoor grow and are looking to possibly utilize your soil and beds.
It depends on what you are trying to achieve. If you want to use less plants, and are ok with a longer veg time, then you can use less plants which are vegged larger. If you want to cut veg time down, and be able to flower faster, then using more plants would be the way to go. We tend to personally use 5 plants per 4 x 4 area, spaced out like the number 5 on a dice. This is a good middle ground of the two. For larger plants we have had customers go with as few as 1 single plant in a 4 x 4 area. For a faster veg time, you can go with 12 to 16 plants per 4 x 4 area. It all just depends on what your end game is.