Well, CDP isn't released yet, so if you're booking at the 180 day mark, you'll need to make a regular ADR and then change it when CP is opened up (we're hearing August). Hopefully, the same ADR time you want is available because I think the CM essentially has to make a new CDP ressie, then cancel your ADR.
As for FDP, you can book that with DDP at the 180 day mark.