The SF4000 is a good choice, for a 3x3 or 4x4 max. I have done a lot of research and it seems a good light in regards to light intensity. The new one I think is dimmable which is a nice feature.
Although there are some on alibaba that I think would best it for value and light intensity such as this
https://m.alibaba.com/product/62426078663/detail.html
The array type above should spread the light more evenly, there are many other options in there just to consider.
Personally I am going to go with two Mars SP3000’s as the light test results are exceptional and should smash a 600w in yields.
Here is a test of the sf4000
m.youtube.com/watch
Hope this helps pal👍