Bonsoir Graham,
I tkink I found how to use a USB memory stick to run Linux, I have an unusued computer that I could use as a playground...
For me , a middle sized instrument has something like 33-35 stops, anyway I just have 40 stops knobs. I would love a third keyboard , but the console would take more place and get heavier , and I already have a grand piano.
I love late baroque instruments and early romantic ones.
My repertoire mostly consist of Buxtehude, Bach and Sons, Mendelsohn, Franck and Vierne. But I regularly discover interesting music to play, like Hubert Parry's chorales I also played lots of french music for organ, but only if I get an organ with a suitable temperament.
I will use a dedicated sound system and computer for the organ and I don't plan to end with too many speakers. Projects grow bigger but rooms don't.
Right now, I search and read a lot just to fix goals and limits for my project.
I found someone who will assemble the Midibox128 kit for me.
Thanks again
Pierre