I am not a fan of your motherboard. But that is a personal preference ( I use a Strix B550 F Wifi)
16 Gigs of ram is “presently good enough post Service update 5” But be aware that the sim is constantly evolving and demands WILL INCREASE over time (AI and addons+ the planned increases in graphic assets+ direct x 12 etc). I would recommend going with the 32Gigs 3600 ddr4 Cas 16
A 5800x is more than fine unless you are a creator or have plans to use the extra cores for something else. Additionally please buy a decent AIO for good temperature management. Im sure someone in here is going to chime in and claim a good air cooler is just as good but im sure they haven’t considered or will try to discount the much longer heat saturation time of an AIO vs an air cooler + the much quieter implementation since there is 1 less fan spinning in your case.
For the resolution you plan to run .. lol your build is more than enough .. When you upgrade your monitor to do a higher resolution you shouldn’t have much issue.
Have fun with your build
My present build is similar to yours with the exception of the graphics card + the 32 gigs of ram and the performance is great
my resolution is 2k and i actually have render scale at 120 for a more refined appearance. So there is still a lot of capacity available if i was truly chasing frame rates. I’m happy sitting within the 40-60 range in almost all scenarios.