If you still have lot of 2x exp, and love to level really really fast, try Ice/lit mage cause they design for multi mob killing.
Assassins is expensive, but seem like you have lot of money to buy gachapon to make a lot of money. XD
Cleric use like one-two spell thoughout their life so is really boring on that part, but save money and you can get in pt easy.
Archer class only amazing when they are 4th job, other time they are average. (various fact from archer subforum, not my conclusion)
Forget about your friend account with hacked history.....make your own is more fun!
Note: All mage leveling hell is start at 70-->until new skill maxed, then they level like crazy.