Wow - what a moving post. A reminder of my own mortality and who is in charge and it ain't me. I had just finished editing a document on my computer entitled "How to live my life without me" – a comprehensive guide to knowing what to do with all my stuff when I am dead and gone. The document presumes that along the way before the end, I will be too sick or not care enough at that point to tell them what I want.
I would keep it simple. The energy that you still have now might be best spent on people and not on stuff.
That said, I believe that the simplest path forward is to speak to the dealer who sold you the bulk of your stuff and ask them to help out your family after you are gone, or unable to participate in this particular process.
I bought a vintage tuner from a dealer, who told me that the family of one of their long-time collector clients had asked him to help move along the components he had in his collection (almost all McIntosh equipment), after his death. I was struck by the joy that the dealer had in the (re)discovery of the cool things in the collection, and in helping them find new homes. I bet knowing someone will have that joy of discovery that you once had with your components will sit better with you now, than worrying that the stuff will feel like a burden to those grieving your incapacity or loss.
Hang in there. The poet Carlyle wrote "It's not life, but living, that matters". I will pray that you enjoy all the living that you have in you, as long as you can. As a mentor once said, "If you can tell the difference between a noun and a verb, I'm in favor of verbs".
Tim