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Not sure about the RGB integration, but you should take a kook at keychron keyboards. They have good build quality and a wide range of layouts and prices. They are above the quality of most gaming brands and don't have to cost a fortune.
They also have mice, but any black mouse should work for you.
I joined one group buy for keycaps. Took 3 years! Switched to Topre keyboards. Now I either need to buy new sliders or sell the keycaps.
Group buys are absolutely not for me.