Google DoubleClick for Publishers Setup

I would need someone to help me get started with Google DoubleClick. Website is a discussion board running on phpbb. I have a beta site which can be used for testing. Some facts about the tasks and goals which need to be achieved - Want to be able to schedule an ad campaign based on views/time - Responsive banners - Currently using Google Adsense - Banners need to use Adsense as default * when I haven't sold any campaigns, Adsense will fill up the space. Available banners for advertisers to choose from are below. You need to make DoubleClick ready, so I only need to upload banners if someone buys a campaign with certain banners sizes. - header * 3 different responsive sizes to choose from * 980x400 (mobile 468x400), 980x120, 728x90 - sidebar * 3 different responsive sizes to choose from * 250x600, 250x250, 250x100 (all mobile 980x120) Please feel free to ask questions if needed!