If you want to make it harder (but with even more potential) try using the mod Galsiah's Character Development.
With a balanced magicka regeneration effect based on your willpower, and no cap on your skills/attributes/level, there's no limit to what you can achieve.
which will have no effect when you choose atronach...?
i use http://planetelderscrolls.gamespy.com/View.php?view=mods.detail&id=1849. with this i played an orc hc mage following build: unarmored, destruction, illusion, alteration, mysticism - enchant, alchemy, speechcraft, acrobatics, one i don't remember
intelligence and personality. she was f**king bad*ss!