The founders themselves are said to be what yc invests in, primarily, and not the idea. We'd probably need to know a bit more or see a video to give you any sort of sensible answerhatTIehat being said, if I were you, I'd apply if it seemed that yc was a good fit. If anything, the application process helps you learn and internalize things about yourselves and what you have to offer.
One last thing about the "big idea" and monitization aspect. Most yc funded things tend to be quite niche, and the vast majority aren't making money when they apply. It's my personal take that determining an audience, how to best pitch to them, and how to profit, are some of the core things that yc offers, in addition to all that fund raising stuff. If your company lacks these things, it seems like a good idea to apply. And demo day couldn't hurt, either ;)
Congrats and good luck! Keep us all updated.