Did Catholic pastor touch me inappropriately, and should I blackmail?

Back when I was in grade school our family had a good relationship with our Church's pastor. I will used the made up name "Father Benjamin" to protect both the pastor and any other children/adults with similar allegations. Every time I saw Father Benjamin, he would whisk his alb (batman-like cape Catholic priests wear) around around me, grab my hand and bring me in for a hug. Now, this is where it gets strange as Father Benjamin would start rubbing my back, and often times my backside. No one could really see what was going on because the alb would hide all of his hand movements and I just umed getting groped was part of the routine since I was only a child. I still have Father Benjamin's contact information and am thinking about blackmailing him for a large sum of money, or at least some nice bottles of wine... Is this a smart idea? The plan seems flawless as I can't see any potential problems arising from it.