Have you asked at Meteor discussion forum as there are active community? Are you comfortable using either React or Angular? You will probably more concern on

Have you asked at Meteor discussion forum as there are active community? Are you comfortable using either React or Angular? You will probably more concern on running Meteor on mobile devices if you're talking about scaling, you might consider Swift and Android Studio, I didn't go further with Meteor due to mobile experience that Swift can provide native experience and running as a web framework like what Meteor does. Other concern is the architecture, I couldn't explore the internal working in Meteor.js due to some difficulty in understanding the concept. That was a factor I moving to Swift as well.