Left wing, Right wing

[NuttyNative]

Going to make up some 4" feathered arrows and was wondering about the left/right wing thing. As you all know I shoot left handed and have been just shooting out of the box arrows. Some blazers, some 3" fusion, and some 4" feathers and I believe they are right wing. Have a few questions about it.

Right wing for right handed shooters, left wing for leftys, does it really make a difference?

If I do go with left wings will I need to adjust my sight horizontally?

Parabolic or shield cut, any difference here?

Is an arrow fletched right wing "confused" when launched from a left hand bow? It was explaned to me that the "correct" wing helps stabilize the arrows flight faster?

Be gentle on me, don't know, that's why I'm asking.