0/0 would kill your feet most likely.
Duck stance, to whatever degrees you prefer is the way to go. Meaning +x/-x, then tweaked for one or both feet to find the right stance for you.
Binding angles are highly individual, and there is no such thing as "optimal stance", it depends on your body.
Personally I ride +15/-12 as that's what feels best for me.
Keep in mind that for switch, having a non-duck stance is going to mkae it a lot harder, but there is no set rule on what angles are best.