Get both to 85, you'll make heaps of gold and get to experience both ranged and melee. I play a ret paladin, and generally place in the top 3 dps of my guild raids, beating hunters, mages, locks. It all really comes down to situational awareness, as well as your knowledge of your class. There are no more set rotations for any class, it's all situational or RNG (ret paladins are the pinnacle of RNG these days)
BoA gear requires 1600-2200 justice points for top/shoulders and a bit more (3200 ish?) for weapons etc. Get into a high level guild and raise your reputation, then you can also buy cloaks (5% extra exp) and head pieces (10% extra exp) for gold from the guild shop.