Booking this as a one bedroom and a studio solves the shared DDP problem but will require more points for equivalent lodging (and perhaps be less convenient since the rooms likely would not be connected). The additional points may negate your DDP savings.
Perhaps you might forego the dining plan and determine that there are other good ways to save money on dining like through an annual pass or a tables in wonderland card? The latter may work well if you plan to eat together a lot at table service restaurants since I believe you only need one membership for up to ten diners.