As usual, Indonesian media exaggerates. What was signed at this year's Singapore Air Show are framework agreements, not contracts.Sounds great, but they dont give the details about the orders and costumers.
And even if contracts are really signed, by airlines not close to bankruptcy, until now the production capacity of IPTN is maximum 4-6 fixed wing aircrafts a year.
However, I do expect a substantial amount of actual order. Much of the interest comes from credible parties with actual needs and in credible amounts. One exception is Aceh's 50 unit interest, which I expect will get rationalized to some sensible number when it's time to sign an actual contract. Details on who signed the framework agreements and for how many units are actually available scattered in various media articles.
And yes, Indonesian Aerospace's production capacity is a bottleneck. On the other hand this is a small simple plane, the production line could be expanded, the number of shifts doubled, and well, deliveries will be staggered over a period of ten years anyway, not all at once. Even if we assume an initial order of 75 units total, delivering 8 units per year should be possible.
The N-219 is a sensible project with a good chance of moderate success. Some media hype is understandable.