LF a case with RGB,cable management side windows good air flow, quiet fans on max, 4 2.5,maybe 3 3.5
I found this for 90$.
i think more rgb then that/rgb fans
The requested bays make it hard. The Thermaltake View 37 is a nice looking case, but I'm not a fan of acrylic and the airflow is more limited.
The O11D-XL doesn't have stock fans, but you can add a ton of RGB and fans and be able to see them very well.
If you can deal with two 3.5" bays, the MB511 has good airflow and three stock RGB fans; the TD500 also has a unique look to it.