Any improvements to make on this video/photo editing rig?

Hi All,

Trying to put together a primarily video editing rig and would love a second opinion on the parts I've chosen! Due to graphics card supply issues we can ignore that component, I'll just try to source a good >8GB VRAM card (for DaVinci Resolve) when I can - but how does the rest sound?

• CPU: AMD Ryzen 9 5900X 3.7 GHz 12-Core Processor
• FAN: ARCTIC Liquid Freezer II 240 56.3 CFM Liquid CPU Cooler
• MOBO: MSI MAG B550M MORTAR WIFI Micro ATX AM4 Motherboard
• RAM: G.Skill Ripjaws V 64 GB (2 x 32 GB) DDR4-3200 CL16 Memory
• DRIVE: Western Digital Blue SN550 2 TB M.2-2280 NVME Solid State Drive
• Corsair RM (2019) 750 W 80+ Gold Certified Fully Modular ATX Power Supply

Do I need the Ryzen 9 or would a Ryzen 7 5800X be just as good? Good mobo choice? Like I said I might try find a 3060 or 3060Ti if I can but I really just need >8Gb VRAM for the GFX card.

Thanks in advance people!

EDIT: Trying to build mATX to fit in a nice smaller case like a Fractal Meshify or similar!