Wow, that doesn't give you much time. If you're a WDW vet, then concentrate on the attractions that are specific to DL: the Matterhorn, Indiana Jones, Mr. Toad, etc. Then move to the attractions that are shared but are significantly different between the two resorts: Pirates and Space Mountain come immediately to mind. Take the time to visit New Orleans Square.
If you feel you must visit DCA, don't spend much time there. It's a nice park, but most of its really good attractions can also be found at WDW. Again, concentrate on the unique attractions: Monster's Inc., California Screamin'. Frankly, I think your limited time would best be served by spending it all in DL and forgetting DCA completely.
Have fun!