We took our twins to WDW when they were 2 yrs old. The resorts that worked best for us were the ones where we didn't have to load a bus all the time. If CR and Poly don't fit your budget, then the Epcot resorts probably won't work either. I agree with the above posters to try WL. You can roll your stroller right on the boat to MK. I think it's important to find ways to park hop where you don't have to unload and fold up the stroller all the time.
Another option is Swan and Dolphin resorts over in the Epcot area. They run some pretty good deals. You can walk/boat to both Epcot and MGM. There are endless eating options. Boardwalk is right around the corner too. Great area to stay.