Good question. It sort of depends on how much you want to put on the pie. For a more classic focaccia or pizza with a modest topping (eg, onions, thin slices of potato or a light smear of crushed tomatoes, grated cheese and possibly sausage a la the pan pizza at D'Amatos, there is no need to par bake). If you want to apply the amount of sauce, cheese and other stuff that is the norm in Chicago for the various indigenous kinds of thin and deep dish pies, you will want to par-bake. Otherwise, you risk a gummy undercooked interior.
Cooking times, I can't really help you with. I'm ususally cooking in a really, really hot outdoor oven these days. Pizza and bread cooking times, for me, are more of a trial and error, eyeballing process anyway. The good news is, dough's cheap.