Never heard about BORE scheduler. It is an additional patch to the kernel ? How stable is this ?

It uses an online installer that lets you choose the desktop environment, boot manager, file system, among other things. You can follow the defaults if you're new. Once you install it, it also comes with a few helper applications that can quickly set up things you'd want to use, like a one-click button that installs all the gaming packages you want to use and their flavor of Proton which is (allegedly) faster than the default.

They also have a really good wiki which I contributed a bit to and a very active community if you need help. All around, 10/10 would recommend to anyone. I managed to convince my friend who's new to Linux to use this instead of Zorin and he's had a great time.