You definately have the haggle upperhand. Play dumb and rave about Fenders or MM's. Don't give away your Warwick knowledge. That is your force, Luke! If they sense that your "hustling" them, you may not get a great deal. As you know make sure that Thumb is in optimum condition. If it is, $1200 is a great deal. $1000 would be a steal.
Happy hustling!