In your situation, do rope drop at DCA and get all the main attractions done like RSR, Webslingers, GotG, Soarin, Grizzy, Pixar Pal-A-Round Swinging (Mickey's death wheel) and Incredicoaster. Check out Cars Land and Avengers Campus in more detail and by that time, it should be time for you to hop over to
Disneyland.
Do the rides that WDW does not have or has a better version of like Indy, Pirates, BTMR, Matterhorn, Space Mountain and Splash Mountain (If it's hot and you want to get soaking wet compared to Splash at WDW). Since you're not a fan of WDW, I'd guess you're also not a fan of Fantasy Land, so you would just skip those rides. If not, check out It's a Small World, Snow White, Mr. Toad and Storybook Canal Boats.
Plus since you're only there for one day, consider investing in
Genie+ and saving yourself from waiting on massive lines.