I really like @Tate Plan.
Last March, we were out of BOG at 8:45.
We headed under the castle to watch the beginning of “Let the Magic Begins”.
Very fun to see all the characters passing and waving at us before going on stage.
Even though it was an Early Morning Magic, we headed in line for Peter Pan’s Flight, were let in right at 9:00 (walk-on) and back outside at 9:07.
Really nice to experience one of the nicest queue in MK (skipped with FP+)
From there, I would ride BTMR (9:15 - 9:30) and Splash Mountain (9:30 - 10:00), and probably Pirates and/or Haunted Mansion before lines go crazy.
You could then easily come back to the right side of the park and use your FP+ for 7DMT, Buzz and Space.
As stated before, they’re not allowing guests to enter 7DMT before 9:00 on EMM days.
As for 7DMT, even on non-EMM days, they may not start the ride before 8:50.
Personnaly, I would not take the risk to arrive at Peter Pan’s Flight after the inital 9:00 rush, while wait times at BTMR and Splash are minimal before 9:30.
On last thing: I’ve heard that they are letting anyone with reservations earlier than 8:45 as early as 8:00 at BOG, saving you some time for your breakfast and still be out at 8:45 (Do the pre-order, it really saves some time)