Sounds like it's coming together nicely.
You might want to think about having a soft opening with a Grand Opening party a week or so later. Consider the first two weeks a preview or shakedown cruise.
One time saver and inventory helper is to price cheaper books using a sticker system. Purple stickers are $1, orange are $2, red are $3, etc,etc. Every two months or so,change the shape or size of the label. If you start with quarter inch round stickers, then switch to square stickers, you'll be able to easily identify stale inventory.
Best of luck.