kwu

I'm fairly new when it comes to edges and trying to learn a little more about them. I just got my board and I'm probably going to take it to a shop to get it detuned since i just got, but I had one question in particular. What degree should my edges be for all mountain freestyle. I want to ride the mountain but when I hit a rail I dont want to catch either.. soo what would be a compromising degree between the two?