I agree that your first stop should be Soarin', and just get a FP for it. Test Track at least has a single rider line (I think), so it can move quicker if you want to do standby. Also, FPs for Soarin' run out by 1pm or so, while TT lasts a lot longer. Standby times for Soarin' can get up to 180mins, so you may not ever want to do that.