I'm pretty sure Kabuto was telling Naruto to taunt him and because he felt Naruto was a bother. I don't know if Kabuto had any faith that Naruto could achieve any of his goals. I believe that Kabuto gave him the book partly because of sympathized feelings, but also just because he wants Akatsuki dead so they don't interfere with his intents. I'm pretty sure Akatsuki would kill Kabuto if they had the chance, too. I think Kabuto just healed Sakura so he could achieve his goals (trust, more dead Akatsuki, etc.).

Again I am not trying to say that Kabuto is evil. He might do nice things, and he might even enjoy doing them, but he hasn't been shown going out of his way to help anyone, not if it didn't help his plans, keep him safe, advantage him etc.