You will love the BC. It's our favorite (except maybe for DD who loves AKL but it's just not as convenient). The Dining Plan does not work for us. I have run the numbers for us when we added the DP (4 "Disney Adults"...our kids are 11 and 13) and we always come out cheaper paying OOP plus the Dining Plan is too much food for us and we feel compelled to try to get our moneys worth. Plus the flexibility without the DP is nice. You may want to just go for desserts one night at Beaches and Cream for example.
Just curious though...which discount were you not able to add dining too. I booked BC yesterday with the new promotion and the room was discounted 30% and the park tickets were also discounted and it gave me the option of adding the DP.