Maybe I missed it in a post, but how long is it?

I myself don't really cross platform, but I would think the actual length would help figure out which way to go with it. Books have a pretty wide range between novels, novellas, etc. Scripts translate into a page of dialogue is a minute of screen time I believe (someone can double check me on that though) so you're probably looking at around 120 pages give or take for that. If you don't mind low budget, you could try to get an indie group to do it. If you find the right people, they can be pretty passionate about a project. Comics are typically under fifty pages, a few hundred words, so you're probably looking at a series or a graphic novel and a lot of time spent with art proofs.