50 years from now I might be remembered as "that gringo" but I doubt it. In the meantime I just want the place to be as comfortable and maintenance free as possible. I have 3m ceilings throughout, framed as I said in 2 X 4 but with only 2 runs of blocking, at 4' OC to catch the edges of the drywall. I don't like those multiple runs of blocking the Chileans use, too hard to insulate or fish wiring later. Seems like most people around me have satellite TV and internet so I'll go with the flow, running a wireless router.
I've said this before and it bears repeating, they don't know how to flash openings. Be onsite for this critical phase and save headaches later. We used a local sheet metal fabricator to run up valley flashings for the roof out of stainless as the galv ones just don't hold up that close to the ocean. The local maestros seem to believe anything can be flashed with fieltro or black paper. It can, but not for long.
If you are going to be any distance from the beach, the air won't be so damp and salty, galv flashings should be fine. If you are sending a container down, spend a few hundred bucks at Home Depot on a good selection and save headaches later. IMO one of he reasons the local maestros are so set against using drywall (Volcanit) and so in favor of that Hardibacker like stuff (Internit) is that they
expect the house to leak and the Internit is better in the damp.

Go figure.
“Now, a lifetime of experience has left me bitter and cynical.” ~ Calvin & Hobbes