Is Rails + Faye a good RIA platform? Or do I need raw node.js?

Is Faye "simply" a publish/receive system for messages or can you build entire rich applications with the combination Rails/Faye?

Part of my website is a fantasy league draft room.

The room itself needs to be programmed to do certain things at certain intervals; such as allowing each team captain 15 seconds to pick a player for his team from a list, before moving on to the next player.

The room also needs to safeguard access; only those teams that are in the league may access the room, and only at a certain date/time.

Can I program all these actions in a Faye setup? Or will I be better off getting this built in Node.js as a realtime app that communicates with my rails app?

Need a nudge in the right direction...