OpenSUSE minimal setup

Okay so I want to install OpenSUSE 13.1 minimal on my PC, but I have a few questions on actually setting it up, I tried with SUSEStudio but failed epically.

1 - KDE5 - Is it stable.
I love the look of this over any other environment at this time, looks so minimal but elegant, so I want to know whats its stability like on OpenSuSE? should I use it for daily system, nothing as this will be more of a play machine than critical, my Laptops for that.

2 - Steam on OpenSuSE.
Okay so for downtime I want to play some games, I would like to know how stable it is, and do games like Borderlands 2 and Witcher 2 actually work?, I remember using Arch linux and not seeing Borderlands but Ubuntu had it in the steam library.

3 - AMD Drivers - 14.9 on OpenSuSE.
Does web yast offer it? or do I have to manually install it from AMDs website?

4 - Windows 8 Fonts in OpenSuSE.
I love the look of Windows 8, but I like the fonts more, so is there a way to replace the fonts in OpenSuSE, and actually get the font rendering working correctly?

Thanks