If this is the first Linux desktop, maybe start with Ubuntu instead of Arch. Arch is OK, just that I wouldn't recommend as a distro to switch to when leaving Windows. Arch might require at least average Linux admin skills, and might brake at some updates. Ubuntu requires zero skills and never brakes. At first you'll probably jump through a few distros anyways, unless you look for set and forget (that will be Ubuntu).
nVidia works in Linux, just that here and there nVidia drivers might make problems.
You can try Wayland together with any other desktop (in Linux you can install all of them and pick which one do you want to use today, just like the Internet Explorer "Where do you want to go today"
![Grin ;D](https://www.eevblog.com/forum/Smileys/default/xgrin.gif.pagespeed.ic.QVVz6XIT20.png)
), but I think Wayland is too young. Only comes with incompatibilities and no real advantage. Maybe in 5-10 years from now it will worth switching to Wayland. 'Till then, Gnome for big buttons, tablet style and almost no settings, Plasma for desktop style and a gazillion of settings.
When switching from Windows to Linux, the distro, the file system and the desktop environments are not that important and can be changed later.
The most important thing when migrating is the mindset:
Do not try to make Linux look and behave like Windows.Take Linux as it is, make new usage habits and use new tools appropriate for the new OS. If you want it to be like Windows, then use Windows. Got this advice from somebody here, on EEVblog, while I was keep installing and agonizing between Linux flavors and desktop environments. Once I've let it go, Linux become a joy to use. You'll see, it will be slightly different, and better.
Except if you are a hardcore gamer. If so, then Linux is not a good choice, stay windows Windows. Some games might work with Linux, but Windows is way ahead at gaming.