This is just a suggestion, if it works then great! I am not sure if the WDW Dokphin gets EE. If it does try this:
Monday - Depending on how tired you are, try something like the
Rainforest Cafe at the Disney marketplace.
Tuesday-Animal Kindgom
Wed-Sea World - this kind of breaks up all the walking. You still
walk, but you also get to sit quite a bit.
Thursday - Magic Kingdom - This will only work if you get EE from
staying at the Dophin.
Friday - Return home tired but happy.
If you do not get EE swith to Wed - Magic Kingdom
Thurs - Sea World
I too would do the 2 day bounce back pass. I would not try to hop from park to park with such little time. Enjoy the parks that you are at, and plan to hit the other next time. Good Luck!