Build help after 20 years playing on laptop!

Hello everyone!

I've used laptops for most of the past 20 years, and now I'm looking forward to building my first proper PC. After watching and reading guides, I put together a build that seems pretty standard for this price range, and I'd like to have your feedback and any suggestions you might have - especially to drop the price down if possible! My build

I will use this PC mainly for gaming and, from time to time, music and video production; I will be using a 1440p monitor but I don't care for ultra-high settings, and I'm looking for a setup that can run titles like Death Stranding 1 and 2, Metal Gear Solid Delta and online games such as Rainbow 6 Siege and Final Fantasy XIV on medium/high settings without issues.

I have some questions about my Part list: should i swap the RAM for a CL30? and should i go for a full ATX or just stick with the Micro ATX?
Last but not least, should i get the 7700 X or am i good with the 7700?

Cheers!