Wine and beer for 120 people?

We are expecting around 120 people at our wedding. We want to get kegs and then buy red and white bottles of wine from Aldis. Any idea how many kegs and bottles of wine to get? I'm cool having wine left over but the keg would be a wast left over. i would say half might prefer beer and half wine. We are not crazy drinkers but i think people will enjoy themselves. Any thoughts?