That's awesome!
Since Crossbell is relatively small, you may have to worry a little more about the players choosing to return to a previous area in the middle of an Assignment, so it might be cool to prepare a couple of Tasks that can be dropped into areas they've previously visited. Also, lean in extra hard on re-integrating existing people -- don't create a new NPC for something if an existing one will do!
If you run into any problems, let me know here, I'll do my best to respond promptly, and I'd love to hear how your game goes!