I'm a wedding photographer, and I've done a few receptions at Vics. They can accommodate your reception size pretty easily, and your guests are going to love the space.
I attended my cousin's wedding reception there in April, and it was a very nice venue. He had a large guest list, so the area was crowded, but it was not uncomfortable. I think you would be okay at the max number. Also, for the room layout, there are sort of two rooms that have a large opening between them. One of the rooms has the dance floor layed out at the end (right where you come up the stairs/elevator), with seating throughout the rest of the room and the adjoining room. This means that people sitting in the adjoining room weren't able to view the entire dance floor (I was seated in that room), but for the important parts, there was still plenty of room to stand next to the dance floor and watch. Hope that helps!
I just came back from Savannah and also looked at that venue. I didn't like the wall between the two rooms, I felt like the guest would be seperated.
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