Are you running short on credits? If you are short on credits, then you'll have to work out the economics with your other dining choices to see if it would more economical to pay OOP for the CP package or pay OOP for two other meals. Otherwise, if you have the credits, I would go ahead and use it for the CP package.
The DxDDP is a lot of credits so I would use the credits at Chefs unless your plans are such that you have to pay OOP for some meals. In that case I would look at menus to see which are the least expensive and pay OOP for those. As a rule of thumb a dining credit on the DxDDP is worth approximately $33.50 inc tax.