Last year we had 8 am reservations for the Garden Grill. At 8:45 we walked downstairs to Soarin, they let us on a little early. Then we walked over to Test Track, and were getting on Mission Space by 9:40. Personally, I would do Soarin first, but that's because you can single ride TT, though we got to ride together last visit.
I don't know if FEA keeps breaking, but if it is, my advice is to see that early. The later it gets, it seems the more it breaks and the more crowded it becomes. At least that was our experience last year. The day we rode everything early we had to wait until 12:40 for our FEA fp, and it was down. Never did get on it all day (even with a fp), though we tried multiple times.