I think I'd keep looking. Yes, it's an Avanti and that's what you want. But, it's been significantly modified with color changes inside and out. Maybe that's OK, or maybe it's lipstick on a pig. If you decide to go with this one have it checked out mechanically and structurally (frame, hog troughs, signs of crash damage).
There are always Avantis for sale, so I'd keep looking for one that hadn't been so cosmetically modified.