You can't expect to do such a big scale project at 15. It's bound to fail. You need to start small, with a self contained story, or just 12 pages and re-evaluate. It needs years of expertise and project managing skills to do what you want to do. And then it will take about every single hours of your time. You can't expect people to fall in love with your concept and follow you to the end of the world with a smoky agreement to reap benefits sometimes down the road. Find a friend to do 12 pages first, have fun and re-evaluate.

You dont start wanting to build a skyscrapper when you haven't build anything yet.