RE: Switching to southpaw?
My son is left handed and is right eye dominant. I just taught him to shoot right handed and everything has gone great for him. When he bought his first bow this year, I thought he'd have to spend a lot of time practicing before hunting, but I was wrong! Turned out to be a natural at that.
I would suggest going to your local archery shop and try shooting several arrow left handed and then make your decision from there.