CRI only really matters for your base whites, you are guaranteed to hate the look of true high CRI lighting over a Reef, a macro or planted tank may look ok...
As you have it now, that arrangement will give you a very warm 9000-1000k look... I would suggest another pair of royal blues personally, especially since you have the lime in the lineup.
If using neutral and warm whites as a base the reds aren't really needed, I've always ended up dimming them way down to off on neutral/warm based builds.
What would save some bucks, and give much improved color rendition, would be to go with a Bridgelux Vero 90 CRI white in the ~4000K range as your base, these will replace 2-4 Cree whites a piece, at only a few bucks each, while offering less wiring work to boot. The difference on these compared to the offerings from Cree are night and day-
Bridgelux VERO Decor 4000k 90CRI white BXRC-40G1000-B-23
Using these you can get away without supplementing a warm white, although if going this route it might be fun to leave a 660nm red in there for color tuning.
You can also try out the Neutral whites from Citizen, they are 97CRI and look amazing when paired with a handful of royal blues, I have a few and they are a very, very nice LED-
Citizen 4000k 90CRI Neutral white CLU028-1203C4-403H7K4