Most home type, stand mixers, like the Hobart K5A have a very narrow dough hook configuration which does not do an especially good job of catching the dough, as a result, it may take a considerable time for it to sufficiently develop the gluten sufficiently for it to form a ball and actually begin mixing, so don't worry about the long mixing time. As for the bready crust condition, begin increasing the dough absorption to achieve a softer dough, this will expand more freely during the early baking stage (oven spring) resulting in a lighter, more porous crumb structure that will actually bake out better and produce a crispier finished crust texture.
Tom Lehmann/The Dough Doctor