No WAY should you use your own books for the centerpieces. I guarantee that some will be taken by guests. I like the idea, but I'd head to a used book store and buy some cheapees to use.
My sister just got married two weeks ago. She used fishbowls (with llive fish) in it. they had plans for the fish and the bowls for after the wedding, but several bowls disappeared during the night (I even saw someone dumping the water and the poor goldfish over a railing, and I said that my sister, the bride, had plans for them and was told "Ooops" and the lady walked away with the bowl anyway).
These were friends and family.
Don't nuse your own books. I am sure the hotel's "free" centerpieces disappear all the time.