Potential RGB AMD Christmas Build: 1st time

[tennengr]

Would like thoughts on upcoming 1st time build (iCUE RGB, FreeSync 1080p & air cooled). Corsair 460X RGB case, AMD Ryzen 5 2600 w/ Wraith Stealth cooler CPU, MSI Radeon RX580 Armor OC 8GB GPU, Corsair Vengeance RGB 16GB (2x8) DDR4 C16 3200MHz memory, MSI B450 Tomahawk MOBO, Corsair RM650x PS, WD Blue 1TB 7200RPM WD10EZEX HDD, Samsung 970 EVO 500GB NVME PCIE SSD, Corsair 3xSP120 RGB fans, Corsair Commander Pro, Microsoft Windows 10 to go with MSI Optix G24C 1080p monitor, Corsair Strafe RGB Silent Keyboard, Corsair M65 Pro RGB mouse, and MM800 RGB mousepad.

Do I really need 3200MHz memory? Is all air cooled okay? (3 front pulling air in, 1 back and 2 top exhausting, PS pulling in to add slight positive air pressure with covers in place, CPU supplied fan, open GPU with 2 fans) For iCUE must remove fan controller, keep hub and add Commander Pro. Are 4 SATA ports enough (2 disabled with SSD)? Do I need 650W PS? Plan to remove all SSD racks for more cable room. Is any overclocking possible with air cooling or setup?