My setup on the 4 vero arrays is 2-3kVero29SE(D) and 2-4kVero29SE(D) on a
HLG-320H-C2100B and a rapidled dimmer pot. Used Rapid for the pin sinks and fabbed up a simple 4' frame. I wouldn't bother with lens or reflectors. I got better uniformity without them. My setup uses a walk-in closet that has a 5x5 footprint. I ran 4 RDWC buckets along each side wall plumbed back to a 17gal rez and pump. The Vero bars are a huge step up compared to the mix of King and Mars 'blurple' panels. Went from 550w of blurple to 650w of vero's and the room ran cooler and I got better growth. After making some basic measurement with a PAR meter, I decided to add some 'flowering' lights to each bar. Added a pair of 45"outriggers(2"x.125") on each bar that I mounted a Samsung FB24B 44" strip. All 4 of the F-strips are parallel wired on a HLG240H-48B driver and a dimmer pot. This circuit is separately switched and also drives a total of 60w of 660nm and 390nm mono's. So, as you can see, its possible to build a great light yourself but it can be addicting...