I would go with 2 Magenta H350s and 2 Deep Purple H350s instead of 4 Magentas.
When I added the Deep Purple it made a huge difference in growth.
For a 5x5 area I would go with the spinner. I am working on a way to mount the lights so that they can be pointed in a desired direction from the spinner.
I would need to modify my room to allow me to grow big plants and not have a humidity problem. So I flower outside. When I finish the Screen Room for my veggies and fruit, I will be building a lab for the Kessil grow. I have a stainless steel enclosure that I will either use as a hempy or I might try and enclose a plant with CO2 and a Kessil.
I have seen enough tests with LEDs to know that they work. In Veg the Kessils are amazing so I am confident that with the right mix and the right coverage, I can grow some sticky, stinky, dankness.
Cheers,
Mo