Your thing is a bit confusing. When you have one driver and wanna do two series and parallel LEDs the same two ends (+/-) are connected together.
+ ---A->B--- -
+ ---C->D--- -
320H-C2100A is a little saver, only half the voltage.
BXRC-30G10K0-C-73-SE is the way to go. Just compared the 660nm emission between 80CRI & 90CRI (3000K). 90CRI has 75% more deep reed than 80CRI, same color temperature.
Vero 3k 80CRI vs 3000k 90CRI vs 3.5k 90CRI would be a nice comparison.
There is no spectrum of the 3500k 90CRI, but the red part should be nearly the same as the 3k,
(black body with 3500k has its wavelength peak at 800nm)
only the blue peak should be a bit higher and wider.
Could be a good...