I am currently playing a Sorcerer 4 (Metamagic specialist)/ Warlock 4/ Eldritch Theurge 6. This works nicely since you can focus on a good Dex and high Cha score for your abilities. IMO Sorcer fits better with this PrC than wizard!
The Eldritch Spellblast = area spell on to EB
Eldritch...