"Literally only spellbooks, and how is that a thing the spell can tell, and what counts as a spellbook, and can you write a spell over the outside of a luggage and pack the whole thing away, are some of the questions that leap instantaneously to mind, but they are not urgent ones. I sure will want a Bag of Holding once I have anything to hold in it."
"Do you need, or for that matter want, a separate room so you can prepare spells? And I also need, if it's possible, a space where I can sometimes be where other people won't be there without knocking."