Excellent! Giving permanent duration uses might be a bit much though, even with the caveats.
I'm assuming you're referring to the Animated Object? If so, well, basically at the level he gains it he can permanently animate them once per day and uses up almost all available uses of bardic music so he gets none of the other benefits of it. Also, these objects can't leave the city. Thought it was enough of a restriction to balance it.
I don't think I'd like to play this PrC, but it's absolutely brilliant for a nontraditional, Fagin-like, criminal mastermind BBEG.
I don't know, in an urban campaign this guy could be a whole lotta fun