So, did my maths! :)
End up thinking to get 2*FOTOP 800 (@3000K) + 6-8*FOLED 312 (probably mixing 2700K, 3000K and 4000K) - should be plenty of light (3472 leds) and doable without heatsink (FOTOP@180W, FOLED@60W). Or 304s instead of 312...
Thinking 1xHLG-480H-48 for the FOTOP and 2xHLG-320-36...