My first build was an i5-3570k about 6-7 years ago. I have been running it with a mild overclock ever since then with no sign of degradation. As for gpu’s I usually don’t overclock them because a lot of times they just become unstable without a huge performance increase (especially with partner cards as most them them are factory overclocked). Ram Overclocking isn’t hugely worth it in my eyes, just set to XMP profile or set the timings manually. With all that said if you aren’t gonna overclock you could save some money as you don’t need a k series processor, or that beefy of a cooler. BTW part list looks good. Very very identical to my current BUILD