I think it should just keep replaying like this:
3 = Recon Plane (30 Seconds)
5 = Airstrike (3 Planes)
7 = Helicopter (60 Seconds)
10 = Recon Plane (45 Seconds)
12 = Airstrike (5 Planes)
14 = Helicopter*s* (2 Helicopters)
20 = Recon Plane (60 Seconds)
24 = Airstrike (5 Planes)
26 = Helicopter (1 Helicopter Again

)
35 = Full Ammo
(Sorry I stole some of your guy's ideas but I added onto them too

.