Nick,
The developing countries you talk about usually have an age 60 cut off for single pilot. Indonesia certainly does. Two years training and if you did manage to snag a job at Susi which is highly unlikely, getting into a Porter will take another three years. That's if you make the cut. Lots of guys want to fly it.
I really don't think you want to spend spend five years in Indonesia. The guys you see on the Channel 4 show are exceptions. Most last two years. Some a little bit more.