I'm inclined to agree on giving the Noble starting funds of 6d8x10 stl/gp. However, the Mystics should be given 3d4x10 stl/gp, since they are basically divine sorcerers.
Adepts only get 2d4x10 gp. Mystics are described, in the DLCS, as divine sorcerers that is why I suggest giving them the same starting funds as a sorcerer.