I would think this is very doable, and have seen others on the forum are also attempting books with C2. The large background vs tiled background thing is a performance issue. In a book there is not alot going on, and if the toy bounces around a little slower than planned it will not be a huge issue.
Thought to consider, is perhaps stay away from the dt frame rate independence, so that if your frame rate does drop, it will affect the speed, but your movements will still be smooth.
Although C2 is designed as a 2D gaming platform, it really can be anything you want it to be, just depends where you want to take it.
Good luck