If you are planning on making this app into a mobile version then just go for it. I have been using it for several of my own apps, and even made a proof of concept app for work. Meteor performs well and from your app description you should have an app ready very quickly, since it's super easy to prototype with it. read more
The front and backend are definitely coupled, but that shouldn't matter in your case. Meteor also has a pretty decent library to fall back on, so you probably wouldn't be reinventing the wheel at all by using it. We at habilelabs using meteor.js for many application. read more