If it's your first class to 60 I would say just level up like normal and don't bother with trying to BiS your way to the goal. The time spent farming doesn't really match the power of the dungeon gear relative to the same level items you get from quests or vendors. After your first 60 though it's a lot easier to level subsequent classes with superior gear since you'll have easier ways to obtain HQ crafted equipment, you'll be able to solo dungeons for sets like Foestriker's and Infantry, and you'll have more ways to obtain company seals for GC equipment.