Ronald, I think you underestimate Team Wacken.
The only reason, I can think of, that they started the big push to territory so late, is that they waited for advanced flight.
So, I think they are actually ahead in research and got to advanced flight around 1000.
We could have reached this also, if we would have played the high research game.
I think that means we currently have still the advantage to have more cities on remote islands than they had at this time.
Based on the estimation when Wacken got AF, we will not win the competition if we just follow them.
So how about the high risk option (originally proposed by Megalou

) - no research to AF, try to get a city everywhere by diplomacy.
To pull this off, we need skilled and lucky diplomacy and a world war ASAP. Wars to last only until the enemies talk, brokem alliances, bombers getting cities down.
I have no idea, if this is really possible, but I'm pretty sure we will not make first place, if we need advanced flight.
Disclaimer:
First place isn't important.
We all play for fun.
But...