I worked a bit on my model. Included some significant modifications so it can probably not be seen as a "stock" Long EZ anymore. However most of the structure (Fuselage, most of the center section spar, most of the wing) stays the same. I plan to include blended winglets, a rounded nose, streamlined canopy, and maybe a retractable landing gear.
To actually confirm the measurements and models, I intend to build this project beginning next year. This will also include building jigs and models (for example to fabricate the new canopy). If someone is interested in building a similar project, it might be possible to re-use these jigs and models