Don’t worry they will fill up fast. I found once I did what you did the new books were like waiting for me everywhere I went. People now days don’t give great books and they are open for the picking. Good luck restocking you will love the new wonders and imagination you will find in every book
I like to have one shelf that is empty and we use it for our library books (living books of course). This gives the children a designated spot to put library books, essential with eight children and tons of books coming and going!