A couple of suggestions for your project:
1.
It seems to me like you have fallen into the pit of trying to get a spectral power distribution that fits your needs by mixing LEDs with fairly discrete wavelength output. Why not go with one of the better white LEDs on the market and then suplement the spectral power distribution up where you feel you need to do so?
I do not have any experience with any of the brands you mentioned, and after having looked them up and the specs, the only one that really made a positive impression is the Thrive98 LED from Brigdelux. I noted that most of them seems to run pretty hot and that will in turn reduce both lifetime and efficacy. I assume this is due to the lens they have, as that will help generate more heat on the LED itself (transmission of the light and reduced airflow over the LED).
With regards to the Thrive98 I would like to point out that I am a bit unsure about the spectral power distribution they present, as the y-axis does not have clear divisions on it and I can’t get to be perfectly normalized. That being said I would assume that using a Thrive98 (provided the spectral power distribution is correct) and suplement it with some discrete LEDs at 730 nm and 400-405 nm (or even 380-385 nm) would make for a pretty nice array.
2.
Why the extra 730 nm? yes it helps with photosynthesis, mainly as a booster, but it can also make the plants more leggy and adding to much would probably not be helping you get the look you are after, unless that is leggy plants you are after. I do not use any extra in the 730 nm range, as I like my plants more compact, but I still have an intensity in the 730 nm range around 20% of the peak intensity. I know there are different results from research on this, but I am going with moderate levels in the IR range.
3.
The different white LEDs, are they for simulating sunrise and sunset? And if so have you seen an actual benefit in plant response to it? I have used it in the past but have come to the conclusion that if there are any benefits they are so small that it is not worth the efford.
4.
More of a comment to your take on the RGB lights. I 100% agree with you, I see RGB lights as a misguided fad.
As a help to some I’ll add a link to a presentation from 2018 regarding the spectral power distribution, plant responce and requirements, and why PAR is really not a good metric with the knowledge we have gained over the last couple of decades:
https://fhi.nl/app/uploads/sites/32/2018/11/Alcom_LED.pdf.
It is easy to read presentation, with a couple of links that will be more aimed at scientifically minded people.