Sometimes it's hard for me to get bosses due to the times that I come online to play the game. Can go for well over an hour without getting one, and not getting any from ?-4 when I run it; however, even with all that I only need 203 silver to finish the event. I was worried that it was going to be hard with the boss spam, but it's not. Plus, it's only been going on for a couple days. Got a looooong time to get what you need.

So, to quote one of my favorite phrases from one of my favorite books, and movie, of all time. "Don't Panic." - Hitchhiker's Guide to the Galaxy