Which Book Funnel tier is right for me?

I need a way to deliver 11 e-books from a recent Kickstarter campaign, and it looks like Book Funnel is the best (or at least, a good) way to do that. I’m also thinking about using that to deliver my reader magnet (currently, it’s just a PDF on my website). For those purposes, will the cheapest option (“First-Time Author”) work? Or is there any reason I should go with a higher tier?