I enjoyed your story, msdesign! Sounds like the kinda tale we adventurers like to trade down at the Wayward Lobster.
My playstyle's much like yours. I like coming up with cool names and back stories for my characters. I still like to kick butt though, which is why all of this arcane caster advice has been so helpful!
playing a caster is a bit hard in the initial levels, except may be for tincan casters who get 2 ways to keep them selves up, pots and spells.
for fleshie wiz who go necro lvl 6 is a breaking point with self healing from aura. till then try to hold back, throw a few webs, charm a few if you are zerging through to the end and let the barbarian yap on and on and on.... well you get the picture
die hard might be a tad useful at lvl 1-5 where mobs tend to get you below 0 but almost never hit hard enough to kill you outright. beyond that its just a wasted feat
Thaxlsillyia: Proud officer of Halfling Commandos