You are over-thinking this, sir.

Just 2 colors will grow superior meds, jus' fine.
No UV, no IR, no far red, no shotgun rainbow, just red and blue.

Only 2 colors, with an adjustable ratio, will show you that you, can indeed manipulate cannabis, (growth, height, internode spacing, flower timing), etc., by varying the R:B ratio.
I do it, in practice, all the time.

This is my first bud from 2 years ago.
A one-hit brain liquifier.
Attachment 277334

2 colors.
10. 5Watt red 660nm.
3. 5Watt blue ~460nm.
From seed.
That's all you need.

Listen to the "expert" if you wish.
Theory is lots of fun.

But ask for pictures of real world results before you act on their advice, yah?

I suggest find a competent LED grower who is getting the results you seek, and ask them about the practical application of leds.
Fer instance;
Attachment 277337
Old Mac uses Theoremes.

I use home brewed.

Attachment 277335Attachment 277336

This was grown with 52W. of 2 color leds
Attachment 277338

The information is all here, but you will have to dig for it.

Aloha,
Weezard.