RE: top pin ten pin sight???
If you want to shoot at those distances, get something that is adjustable like an Axcel, Copper John ANTS, or Sure Lok.
Good luck getting 120 yards too. I guess it's possible but you better have a peep to nock distance of over 6". For FITA I can barely get 90 meters (99.xxx yards) before fletchings start to contact the bottom of my scope housing.