Welcome to the forum! What kind of sorc do you plan to do? Lightning, cold, fire, hybrid? I guess from the equipment that she's gonna be mf'ing - have you thought about who you want to run? Or do you want her to be good all round?
The full Tal has a nice balance of survival, killing speed and mf. Highly recommended, though it's not directly made for a cold sorc. The gear setup you listed first is a little too biased towards mf, especially for an orber who needs a good handful of +skills. For Mephi use Wiz Spike for the teleport and switch to an Ali Baba/Gull for the kill (if you don't use the full Tal).