Too bad your DM doesn't allow the PHB II. The Duskblade is one of the better designed fighting/mage gish builds. Full BAB and spells to boot!
Alternatively, I have heard good things about the psychic warrior, albeit that is a) from the expanded psionics handbook (although it is also in the srd), and b) psionic not arcane, which some people don't want in their game (although I find if you just call it "gem magic" and reskin the names of the psionic stuff as magic stuff, you do just fine).
