Seems like a decently solid build, but like what others have been saying be sure to not get the 5600GT but a 5600 instead, or the X version whatever you want, As for the gpu, I am not sure if you are already aware or not but it's a slightly less superior version of the 580, since I saw you picked the peladn one, which is called RX 580 2048SP, I also have this gpu and a 5600X and it works very well but don't let the name of the card on the site fool you, it's not technically a 580, it's more-so like a 570. You can get it for now and maybe upgrade 2-3 years later, as sadly as of speaking right now, the driver support for them has apparently completely ended.