/lit/ - Literature

I don't know whether I should make the setting of my plot contemporary or fantasy. If it's contemporary, I can definitely fit into a single novel and appeal to a wider demographic, but I'd be stripping away a lot of my original plans and ideas. If I opt for a fantasy setting, I can make my own magic system and tell the story as I intended it to be, but I'd feel the need to stretch it out across more than one book. Not only that, but I'd also have to fully trust my ability in making a cohesive world, or it'll crumble. What do I do, /wg/?