Basically my question is with Xizor giving Han Accurate, when Han uses his charging fire ability can he basically shoot anyone he can see? (Outside of superstealth and cloaked characters of course!)

Well, to clarify when Xizor gives Han Stormtrooper Accurate Shot you then are wanting to use Furious Assault to attack every legal target once. Not Charging Fire . So yes he can attack every legal target he sees with the combo.

Thanks for clarifying the question, was reading Han's CE on another page when I posted .
And thanks again for answering my question, I appreciate it!

Make Han's Furious-ness even furious-er with Ackbar, for +4 vs un activated.. and get a wicket in then. Then Han can be shooting at an effective +16!! Unlikely to happen.. but still, that would be great!