The girl/guy you're infatuated with that you've been waiting for the opportunity to ask out, invites you to church!?!!!???!!!?
Go check it out! Going to church won't kill you and it could be she needs to start off in a place she is comfortable and feels safe. If you get there and find she only wants to convert you, abort. I see nothing wrong with taking a chance. You don't have to tell her your an atheist unless she asks.
Nope. Sometimes it's better not to meet your idol (or crush).
Sounds like a $40 cheeseburger - a high price for something you want RIGHT NOW, but will ultimately find unsatisfying.