I just backed 1 Ghost. And the tally is at 6871.
I had originally thought about buying more than 1 Ghost. Part of the reason was the figures, and wanting to keep a set carded and having another to open. But then I noticed in the copy for the campaign that it appears that the exclusive aspect of these figures is going to be the Ghost crew mural art from the final episode of the series. Perhaps there's going to be an exclusive accessory or two with the figures - maybe Ezra's helmet or the Kanan alternate head from "Jedi Night". But it's my belief that these figures are all going to make it into the mainline, just on different cardbacks and some slight differences.
I backed during the live stream, but I'm considering another one. Have you seen the prices of the Sail Barge Yakface? The figures can definitely help you recoup costs, and the entire package (ship and figures) will only go up in value.