As space constraints are the biggest problem, the project begins with the build of a mockup. Center of gravity is not allowed to move much and the space available is not much more than for a glider. So most things will have only one possibility where to fit them. The mockup is used as sort of a "proof of concept", that seating position is optimized and all instruments can be handled in an ergonomic way. How to begin? The mockup is done growing inside out, so it starts with a 20cm wide middle section depicting the seat and then grow inside out, until all cocpit dimensions have been verified and frozen. Pictures will be added soon . I am quite busy handling multiple projects at the same time.