@LED_Seedz thanks for cracking the lid on that light. I have exactly the strip you need to rebuild that light in production now, with delivery expected in early January. A 36v SolStrip designed for use with the 36v drivers that are found everywhere in commercial mid-power and COB LED lights.
Here's a peek at the prototype, in 2700k and 5700k dual-spectrum:
Your drivers would run 3 of these strips at a highly efficient 50% of max, and would give you about 25K lumens/m2 across your canopy at 12 inches. Might be able to mount them all on your existing heatsink: what are the dimensions on it and your case? The X3 strips will be 40x400mm. I will have custom SolSinks available for the X3s as well.