I did it!! My first hard scenario completed!
Actually it wasn't that hard. I did it pretty straight forward - I refused all offers (mining) and kept following the orders from the agency - army base (1957) and power plant (1959) only building some extra bunkhouses along the way, which was quiet unnecessary (my people love me), a house for my general, which I hired just in case and a teamster office, for temporary exports.
I said no to the first elections, although the preliminary results advanced a total victory of 15 to 1. I just hadn't the time for small stuff.

Maybe I'll repeat this scenario and try to accomplish the second objective, to build the airport. This should raise the scenario's difficulty. But this time I'll have to re-think the location of the 3 farms, to leave the unforested area free for the airport.
Date: December 10, 1959
Population: 27
Treasury: $15.618
Swiss account: $0
Happiness: 58
Edict used: food for the people