Might seem like pimpin'.
They frown on that around here.
But, I'll root about and see what I find.
When I ask for your direction?..It ain??t pimpin??. I??m just thinking that your experienced eye might not overlook something that I??m totally unaware of. Besides that?.a couple of old guys with ??grows? have more important things to be concerned with.

They look serious but they're just 3 small, cheap, muffin fans.
Leds don't radiate heat like incandescent lights or HPS/MH.
That's why we can have the lights right down on the canopy.
LEDs produce heat at the diode junction.
So we have to suck the heat out the back and dispose of it
Ok, the heat is dissipated out the back and not towards the grow?that part I like. But the heat is still created and still needs to be removed. (I never quit?.do I). Don??t get me wrong?You be da?? man. If the UFO??s are even close to equal to 600W Hid??s , then I don??t really need that much light. 600 X 2 + 250 1450 watts in 12 ½ sq ft. That??s only 116 watts per sq ft. You can see that I haven??t completely given up on smaller flanking Led??s. If there was a quality Led in the 50W range (at a reasonable price) I??d still be considering that option.
Can you have too much light?

Lemme get this disclaimer out of the way.
Notice:
This lizard is not an expert at anything but loafing.
I don't have "the one true way" . I'm just an old fart who has plenty of time to think about things and a budget that mothers my need to cobble together my own lights.
Are you beginning to think that I have too much time to think also

Will adding far red at lights out produce fatter, tighter buds?
Ah dunno. But I have a small experiment going to find out.
Always interested in the results of a good experiment. I kinda feel that that??s what I??m doing now as the Hid/Led combo doesn??t look much like a popular experiment.

(How 'bout your light DH?
Had enought time to compare it to your HPS grow yet?)
DH?..huh?
Haven??t grown anything beyond garden vegetables yet?..and screwing around with all this minutia I probably never will. LOL

I like your plan and will pull up a chair.
Don??t sit on the edge of your seat?.I live rather rurally (kind of like living on the big island) and the accumulation process is oh so slow and painful. But then slow as I am, I am one persistent S.O.B.

Mahalo nui loa
Aloha
Haole Horseman