I mentioned in the M&G thread that I figured out a less clunky method of spontaneous spellcasting.
Base the class as a sorc. So, base class = 19. Patch the armors as you've done. Now, buff the fuck out of your clab's thac0, apr and give it, you know, HP_FM. Then assign your spells as actual wizard spells instead of innate ones.
Okay, so I'm playing around with this "Duskblade" kit. It's old but, you know, throw in a later version of fl#add and crap. Well, point is it played smoothly. And this was my CLAB (very rough draft, using random spells i could clobber together). Again, this is a Sorcerer kit (with all mages being able to wear all armor), with hpclass handled with HPPRS:
I hope this picture is clear. But anyway, stealing Thac0 from RR#.
AP_DU1/DU2/DU3/DU4 each install a list of spells. The mod originally set them as innate and semi-spon-cawsted from there, and he I think used the Fighter class.
What I did is changing all those innates (within the list) to wizard spells, as well as any other ability that was GA_ed.
Since I'm a sorcerer, and my spells are all mage spells, I can cast them spontaneously like a sorcerer.