I'm making a budget gaming build because my Surface Laptop can't run Subnautica 2, and it's about time I graduate to a proper device.

https://au.pcpartpicker.com/user/Millk/saved/JLNH8d

If I were to buy everything on that list, is there literally ANYTHING else I would need to build a full working pc? I have a usbA mouse, usbA keyboard, and ethernet cable, and I will also be getting an HDMI 2K monitor, usbA bluetooth dongle, and some thermal paste. Is there anything else at all that I need?

Is this a good build? Have I distributed my money well or am I overspending on something? Is there anything I might be missing? any stupid mistakes?

Also, I know I could get windows for way cheaper, but I tried to do something similar with my laptop (boot from recovery drive) and it didnt work, I spent loads on trying different USBs, and ended up paying someone to fix it so I don't want to make my own drive :(