@Reshirams_Rad_Slam I normally just run archinstall and pick a desktop e.g. KDE. Easier. It automates most of the arch setup. I might do a bit of tinkering after the fact.
I'm happy to install Arch Linux for you, if you wish. Please note that while I *can* provide a 1366x768 screen, the T480/T480s that I sell both come with 1920x1080 screens by default!
I think the 1366x768 machine you refer to is probably the ThinkPad X230. That got canned. I only sell T480/T480s now. It's a better machine.