Great approach! Many people don't realize that campaigns must be created and implemented well ahead of time. Growth hacking for example takes time and a lot of diligence, many think is a quick solve all approach to marketing but contrary to that!

I would be willing to help you if you have any questions. I have done several growth campaigns with significant results, you didn't seem to post a question tho. :)

I'd love to help you! I helped 100's of authors plan successful book launches through my company www.publishyourgift.com. It's good that you're already thinking about how to build your platform, before the actual release. That's a vital component! Let me know if you have any specific questions, or just go to the link above to schedule your free consultation.

I would like to say you best of luck and if you are looking to build a platform to launch the books online then feel free to contact FATbit. FATbit is helping the small businesses or startups to build the online platforms and having extensive experience with a good track record. For any of your query or to get tips for your idea, feel free to contact here: http://www.fatbit.com/request-free-website-consultation.html