No, level 59s can hit rank 14, however realistically 12/13 is the highest you can get.
You can hit 60 when you hit whatever rank you desire, Ill shoot for 11 for the black pvp mount for bragging rights, maybe rank 12 if I really want to take the hit IRL but likely no more unless my server has garbage carebears/not much rankers.Leveling all the way to 59 and then pvping forever and not hitting 60 sounds awful.
You cna still also raid MC and stuff, mobs give like 9 experience. Might take a bit of convincing but youre definitely not a hindrance in full DM/blackrock/BG rep rewards and enchants.