Is Ionic + PouchDB + SQLite + Firebase a good combination for offline/online mobile app?

I'm trying to build an app with offline and online capabilities. I'm using Ionic, then after some research I would like to use PouchDB+SQLite as an offline database, then sync it with Firebase when internet connection is detected.

what would be the challenges? pros and cons? :)

[I'm really having a headache now. literally. -_________- ]