"The way I figure it, if you're cooperating with France from the opening, you're rolling anti-Austria anyway."
Not at all. If you cooperate with France and Austria in the opening, you're abating the possibility of a WT while also getting Austrian help against a juggernaut. If there's no juggernaut, you get three centers in Turkey. Your best bet without being overaggressive would be to cooperate with both France and Austria, avoiding a useless, never-ending fight with France while also keeping up with Austria's (or the juggernaut's) growth.
If you're going to open against France, open A Ven - Pie, A Rom - Apu, F Nap - ION. If you're going to open against Austria, you can either open A Ven - Tyr/A Tyr - Boh, A Rom - Ven/A Ven - Tyr, army in Venice in builds or you can open A Ven - Tri. If you're going to open against Turkey, you can open A Ven H, A Rom - Apu, F Nap - ION. Those are your options. The others do you no good.