It would help if you told us your budget for the computer build, and what country you live in (for access to the components). You don't mention a lot of other components that would be needed, such as a monitor, a keyboard, a mouse, etc.
The minimum amount of RAM is 16 GB, with 32 GB preferred. You can get by with the 16 GB though. The CPU you selected isn't that common and I personally would be looking for an AM4 socket CPU in the 5000 series, such as the 5600X or better. You choice of a 700 Watt PSU is a bit on the low side for running a discrete GPU, and I would recommend a PSU closer to 850 Watts.
As Albert Einstein said, "I could have done so much more with a Big Al's Computer!".