I left Australia on Dec 23 for the USA - and was just notified that my TOS set arrived at my front door early on Dec 27!
Ah well, something to play with when I get home at the end of January.
Re. Digital v. Hard copy: Though I think I would prefer a digital download of the music at hand, I wrote and self-published a book and have resisted e-formatting it. I labored so hard over trim size, typesetting, picture placement, page layout, cover, I am not allowing someone's random ereader to undo all that.
Why not eBook it as PDFs? That will hold all your formatting stable.