An Insane Amount of Work

I'm toying with the idea of jumping into an insane amount of work - with no guarantee of making any money - a graphic novel.  Yes, I know it is a "me too" idea, but I like the idea of telling stories as opposed to just trying to make a single piece of artwork or illustration.  Im not sure if this is going to be something really good or a colossal waste of time.  Here is a snapshot of some of the panels.  Hint - yes it has zombies in it, what respectable graphic novel is without Zombies?