Well, I've taken so long building my plane that the company has stopped making them 😲 so my list (minus the engine parts) will become even more relevant for me over time.
They are restructuring, and will still be supplying parts. One thing I'm toying with is to get a spare set of sails. People say 'just get a sailmaker to copy them'. Problem is, they are pretty complicated sails, and I've heard some horror stories. Of course it's a HUGE expense holding onto a spare set, and they take up room in my already chockers garage.