Well if your doing Leve's your scourge/banish isnt going to do alot of damage depending on the difficulty you choose. INT and PIE are the best way to go. You wont need a ton of MND because of Siphon and MP Regen in passive mode. Having points in VIT is always good but you don't want to go over board, as you level that stat its going to start costing you more points to raise it. As far as DEX for crafting you can buy the Traits from the THM or CON guild and swap points without sacrificing your points from INT and PIE.