Veteran II status is only 1495 TPs. Just get that and roll a new L7. Use an xp pot and you can zerg him through the lower level content and get to L9 in a couple of hours easily.
Even easier and cheaper to switch to another class next level and keep your 10 levels of sorcerer. You could switch to bard or paladin to keep charisma based, use the free feat swap from Lockania to discard change a metamagic to something else, and by level 12 (if not sooner) your offensive spells won't be OP any longer.