We are getting a new RR500 engine that has more power. In the Fall Leadville, CO will be unsuitable in due to cold temps and snow. Going South to Peru makes good test sense, though the logistics are pretty hefty. Testing has to include engine cooling, installed performance, etc. The alternative is a several month delay until Leadville warms up.
As an afterthought I have asked the project folks to think about the transport of test equipment, computers, spare parts, etc. I'm leaning towards a shipping container for the aircraft because of all the extra support material and equipment.
We still have a lot of research to do before we commit to this trip.