bookshelves??

so there is NO room for anything else in this nursery without it looking ridonculous.  But I'd hate to not have anywhere to put some books, pictures, maybe one or two tchotchkes....

options obviously include the single flat white wooden shelves that you can put up individually... but I came across these at Ikea last weekend during my shopping trip with Mom and Aunt CoCo (Cover!)

You can find them here:  Ikea Billy Shelf

what do you think??? too busy?? I'm looking for a "built-in bookshelf" feel.  maybe above the daybed (shown below with the sad little crib mattress in place before I got the twin)