Thinking about selling because I'm the type personality who wants the best of the best. I love my rapid and for the price they work great. I be gotten great growth on them from softies to sps. I'm (probably) selling because I upgraded to a 120 and wanted radions for their ease of programmability. Such as modifying the color you want at specific times of day and their features. Etc.
I don't like a very blue (20k) tank either. I prefer the 12-14k look. Which is more natural but still gives your coral good color.
First off. Avoid reds. They are not worth it. They overpower your spectrum to the nth degree and make everything in your tank look like pepto bismol. Even 1 red is pointless seeing as it's only concentrated in one spot. (Reds create a bad color banding issue as well) ie they don't blend with the rest of your spectrum. Ditch the plan to add reds.
You're much better off buying neutral whites. They provide the dash of red/orange that most people want, without the hassle of a solid red.
Regarding your white ratio I would do half cool and half neutral. That's what I use and I'm very happy with it. It looks natural without the synthetic look of 100% cool whites.
Regarding colors I would make a mix of royal blue, blue, and maybe two or 3 cyan. The cyan will add a mix of green, without the same issue of using a solid red, but in this case solid green.
Word on the street is uv is great, but you need a significant number of UVs to make any impact. Uv is used strictly to help growth. The human eye cannot see uv wavelengths, thus you won't see any difference in color in your tank. It just looks like faded deep purple. If you cut anything (for monetary sake) cut uv out. I had some and got rid of them just cause I realized I didn't really need them. I may add them back just cause I have them sitting around.
Kit: buy solder less and dimmable. These are absolutes. Don't skimp. Dimmable will prevent you from frying corals and allow a nice sunrise sunset. Plus adjust the color better. More or less blue to white.
Advantages of solder less far outweigh the cons(price) with solder less, if you don't like the color you can adjust which leds you use. Plug and play to install those. Whereas your stuck with soldered LEDs the other way.
Pros of rapidled: DIY price is nice
Customize to your specific tank, good price for quality lights that work well and grow grow grow.
Cons: you have to kind of blind pick your color spectrum. Then once you get your colors hope they look good based off what you can do with dimming the channels. This is disadvantageous when you end up with a spectrum way off from what you'd like. Because you have to add more LEDs or take some away.
I can give you some more input later if you have additional questions.
