First of all, you need to update your clothes ASAP. Forget about the weapon, you can carry Weathered Scepter and you would be doing fine because Mage weapons are absolutely horrendous when it comes to stat for now. Do not ever enter Active Mode, all the non-casting actions are absolutely useless apart from Levinbolt II which still do some dmg due to DoT, but you need 1,000 TP for that so it's useless. Do not use Banish/Scourge I, use the version II they are much better now. Do not use Sacrifice II if you have Stoneskin, use Stoneskin and refresh it after you get hit for about 4-6 times whenever you can they will save a LARGE CHUNK OF MP. If you have Stoneskin II you gonna own the shizzle out of mobs 1-2 levels higher than you (and don't even mention mobs your level or lower, they wouldn't be able to scratch that). If you use Stoneskin do not use Stygian Spike but use Shock Spike instead, you need to get damaged to drain MP from Stygian and there's no point in that if you don't get hurt. Siphon MP whenever mobs down.