arrr! i can put my hand all day long on the gavita an the GC shit i ran open hood 1k at 6 inch from ceiling no problem just need air flow.I could get closer,alot, but hlg says 15 between driver and ceiling
That setup looks mint.
I thought I would be adjusting my HLG 350 in my tent, but I set it at the top and haven't touched it. If this is a flower only room, you have a separate veg space, and running the same genetics, then you should be able to set the height and leave it, I would think.
What height above canopy is your 350? And is that full power? Or dimmed? I have a 300 Bspec 48” above almost 2 month old plants, dimmed to 30% and I swear it’s almost too much light