So in the near future I am switching the grouppo on my road bike, any way I'm looking at a wide range cassette setup with a SunRace MS3 11-42. So to this end I was wondering if a long cage GX 10 speed rear mech setup 2x (52x38) is capable of running a cassette of this range? Yes I realize I could go with a smaller range cassette, but I live in the mountains and suck at climbing. So will it fly?