The park where strategy is most important is Epcot. This is because the attractions take longer to complete, because there are so few of them and because they are tiered. As a result, the “Rope Drop Effect” wears off quickly there. If you go to Soarin’ at RD, by the time you complete that ride, the line at Test Track might have grown to 40+ minutes. Hardly the RD advantage that you are looking for. Whereas at the Magic Kingdom, you can arrive at RD and hit a whole circuit of 3 minute rides in the first hour. So what I would do is choose between Soarin’ and Test Track and RD one and FP the other. Whichever one you elect to FP, book the 9:00-10:00 time slot. By the time you finish your RD ride, there will still be plenty of time left in your window to use your FP+ for the other.
Next, you should book your other FPs for 10:00-11:00 and 11:00-12:00 respectively. After you use your first FP, whatever time that is, try to move your next FP up to as soon as possible. So if you use your first FP at 9:40, try to move your second FP up to 9:45-10:45. And then use it as soon as you can. If you book something like Spaceship Earth or Figment, there should be relatively low demand so moving the time should be possible. Use that FP at the earliest possible time, and once you do, try to move your third FP up to as soon as possible. Again, if you used your second FP at 9:55, try to bump your third up to 10:00-11:00. If you booked a marginally popular attraction, moving the time should be possible. Even if the Stand By lines are small at these attractions, use your FPs anyway. This way, by 10:30 or 11:00, you should be through your first three FPs and will be eligible to get more, without the constraint of tiering. At this hour, every attraction should still have availability. And at any time in the first two hours, if you find that you have time to kill waiting for another FP to kick in, go to Sum of All Thrills and do that before the lines build.