I priced it out on the Disney website and came up with $1557.13 for four nights preferred room, three four day park hoppers, and the dining plan. Transportation to and from the airport is free using Disney's Magical Express for anyone staying on-site (I don't believe it is included for the Swan, Dolphin, or Shades of Green, but all other resorts). You don't have to get a package or go through a
travel agent for that.
A couple of things to consider:
if you have
AAA, you can get 20% off the room portion at Value resorts during value season, but you have to book the package through AAA (you may have already done this, which might account for your lower price). You can get a AAA discount on room-only by booking through Disney or AAA, but the package has to be done through AAA.
If you have a discount on your room, you will probably lose that discount if you get free dining. Typically, no other discounts can be used with free dining. You will still come out ahead with free dining, but the difference might be less than you expect.
Even if free dining is offered, it has to be available at your resort for your dates. The number of packages is limited, so you might have to be flexible with dates or resorts.
Some people on the DIS have posted that free dining might only be available at moderate and deluxe resorts. Typically it has included all resorts, so I don't know what they will do this year.
Your 1-year old is free on the dining plan at all buffets and family-style restaurants and can eat off your plate other places. You do not get credits for her, but you probably knew that already.
Hope this helps some!