I'd go china knock off quantum boards in your setup.
2x 800 lm301b boards on heatsinks and a 480w Meanwell driver with a dimmer.
You could also go with strips. I built a small veg box 2x2.5x2.5 with 400mm 96x lm561c and put 6 of them in with a 150W driver.
You get kits delivered to US or...
That sounds like a helluva plan bro! We definitely have to meet once you guys are this close. To hell might treat myself with a birthday present and my first trip to Dam 😁 But of course you guys are always welcome with us. The door is wide open!