[QUESTION] Mi-One build.prop tweaks



I would like to cook in some build.prop tweaks for my MIUI v5 JB ROM, but I am kind of a cooking noob. There are many build.prop tweaks, but I wonder which would be good to cook in.
I know that too much build.prop tweaking can lead to massive problems.
So could anybody give me some advice what tweaks would be safe and wise for the Mi-One?