170 or so is good. No need to have them on the floor. lol.

I tend to avoid prophecies in these stories, except to subvert them and hard. They railroad the plot if they are followed. Still, having a representative of each race do something would be a good idea. Just no prophecy, please. A daring, life-altering adventure is a good idea. In fact, just about everything you described sounds good, except for a prophecy. Or anything involving a "chosen one", unless the idea is to subvert it (like, he isn't actually the chosen one because there is no such thing as a chosen one). There are more than five races, though. At the orphanage alone we so far have humans, kobolds, lizardfolk, dwarves, halflings, and elves. That's six. We might have also mentioned goblins at some point, I'm not sure. That said, Arjun and the unnamed one seem like a possible start to such a group. I wanted to do something with Jorn, though (he's also a halfling). 

And I believe that "druidic" is indeed a real word, the adjective for something druid-like, or something that a druid would do or have.