I think you can use Arch for university, but I have a few suggestions:
Don’t update packages unless you have time to fix issues. Rare, but it happens, although usually minor.
Never mess with greeters, kernel modifications, bootloaders, or anything else before login. Fixing issues may require a live USB and take some time. Avoid the temptation! (Ask how I know…)
Use Flatpak where you can for increased stability by way of fewer packages to update.
Of course, you could also use a non-rolling release distro. Nothing wrong with that.