See if you can get an FP for any of the headliners you want to ride right away. Then choose some high capacity, low heat things such as Tiki Room, the train, PoTC, Libery Square Riverboat. You could also catch the 3pm parade. Then, once the heat and afternoon crowds start to lighten up, start in on some of the more popular attractions. Be sure to keep on top of FP and get a new one as soon as you can.