I'm jealous of the elevation on your family farm. I'm only 400m. Quite low and my harvest period is right before or our sweetest months so Mold is a huge risk for me.
We will do a natural process this year and build our solar dryer and infrastructure for a washed process next year.
I love coffee but this is just personal as an experiment. If it works, we will plant more and go for a small batch of retail ready beans next year.