I hit a platue at level 21 where I'm doing 2 routes and 7 airports which I mainly use 4 of those the others are just connecting airport. I'm flying 8 aeroeagle's. I have 2 pairs each made up of p and c configuration. They fly route 1 which is LA-NY-London-Moscow.

Then I have a pair of P and C and a pair of M's going from London-Baghdad-Singapore-Sydney, Route 2.

I fly the planes in pairs and opposite of the rotation of the other pair.

The aeroeagle sets take 6 cargo and 6 passenger and I only have trouble sometimes getting them loaded in Sydney. That's because Sydney is a Class 2 airport. Oh and LA, London, Moscow and Sydney are all leveled up airports.

My question is what to do next?