Oh wow, Brook, sorry to hear about your back issues! I know how much you love that black 30, so I hope it all works out somehow. As far as lifting the lever harps goes, when it’s time to move them you might try just putting a cover over them and strapping them to a dolly (like pedal harpists do) rather than wrangling them in and out of a big case and carrying them around. That’s what I do and it’s so much easier-also very little lifting required.
I’m down to two Fishers and three Thormahlens, so I’m TRYING to downsize…
Good luck with that back procedure, being limited to lifting only 10# would be really brutal! Let us all know how you make out with that.