What is your vertical space? Those 3w chips in reflectors should require a minimum 8" distance to the canopy, 12" might be the max distance. (I have BS's 2014 v2 180w which is 3w in reflectors).
I don't recommend Blackstar. I own 4 and they're just rebranded Chinese imports sold for almost twice what you could buy directly from China. They use epi-whatever LEDs. Blackstar doesn't accurately list their spectrum. For example, they mention UV and IR as if these are dedicated chips. They're not. When you call and ask about it, they say it comes from phosphors from the white LED. It gives the impression you're buying targetted bands when it's just like anyone else's white-including fixture.
In this case, you're going to get about 360w total (they don't tell you actual draw, which is another negative for BS). And, with a single monolithic fixture you won't get the coverage you'd get from smaller fixtures. When (not if) it fails you'll suffer a total outage.
For $850 you could get two Area 51 RW-150s, or four RW-75s. Vastly better lights, more efficient, known Cree diodes (not epi-whatever). The ability to buy replacement parts in perpetuity (not a disposable light). Planned upgrades as Cree introduces new, more efficient chips.
For example, you could buy two Apollo 8-spots for $500 (free shipping) and free custom spectrum from
Thunder Lighting on AliExpress.[1] (It says 260w. That's a typo. It's 360w. 15 LEDs x 3w x 8 spots.). I bought a 4 spot from these guys with a custom spectrum mimicking Grow Northern's rebel spectrum. Works fine (for epi-whatever chips.). With two fixtures you'd have more coverage, more light when a fixture fails.
I'm not recommending that AliExpress light. Just using that as an example of how Blackstar is marking up essentially the same product. We have to assume it's the same product because they don't tell us how it's different. I.e., if it were different in some meritorious way, don't you think they'd proclaim that fact? Like, if it used Cree or Osram diodes, you know they'd mention that as a selling point.
Bottom line: For that money you can get a much better light. For that quality of light, you can save money.
[1] Grow Northern Rebel Spectrum implemented in a 15-chip Apollo module:
-- 7% 1x IR 730
- 60% 9x deep red 660
- 13% 2x blue 450
White avg 5116k
-- 7% 1x white 3350k (3200-3500k)
- 13% 2x white 6000k (5500-6500k)
If I did this again, I would investigate the merit of IR. I've got a feeling all it does is create heat. I would consider replacing it with a 630 red. But, the one I have with the above spectrum grows well. Maybe a little stretchy in veg.
