Living in the sponsoring state on a 190 is not a visa condition. It's more of a gentlemen's agreement or a 'moral obligation'. You are expected to stay in the state, but there's currently nothing in law that says that you must.
Many people use this backdoor into Australia, but many states are clamping down on it from the outset. Some are insisting that you have strong family ties in the area, have minimum 80 points, or are already living in the state. I'm not sure if Victoria is one of those states, but it's worth finding out first.