Just as @Nicias said. You can minimize inclination change dV by launching at the target AN/DN with correct inclination to LKO as possible, you can make little correction after the launch. Then all you need is to create a manuever node with ~920/950 dV (930 according to dV Map) depending on the desired flyby/orbit around the Minmus. It takes a little more dV to be captured by Minmus' SOI, but it takes significantly lower to adjust your orbit, land/take off and return. Because of its low gravity, it's much easier to mess around it, feels even kinda cheaty