Yes I did build a light just like that EXCEPT my board spacing was a bit wider (6 inches short axis and 9 inches long axis) and I used QB304 Boards instead of the 288s and I downsized my drivers (2-Mean Well HLG 240H-C1050B) to run at 75% which is more efficient. I also used there slate 3 heat sinks and attached them to an aluminum frame that I built. The wattage came in at 495 running full blast.
I had never built a light before but it really wasn’t all that hard.