That's the best rate that you'll get for the free dining offer. The rooms are at the rack rate for value season and the tickets will be at Disney's advance-purchase price. Really, the only places to save any money would be to drop the hopping option, which would save you about $85 for 2 people or to choose a value resort instead.
For 2 people, 8 nights and a moderate resort plus dining, I think that $1750 is a bargain. You're spending less than $110 pp per night for lodging, food and entertainment. Not bad.