Not trying to sway the new/used conversation either way but addressing the specific model.
It seems you're looking for a bunkhouse model. We're in a 2010 32K which is a bunk. I'm not sure how long they made them but it's suited us pretty well over the 3 years we spent on the road in it. I guess if you do go the used route, that's another model to investigate. The factory brochure is a bit optimistic saying it will sleep 8? You could, but comfort and storage would be an issue with that number. It's also only a single bath, so 8 people/1 shower and toilet???
2010 Winnebago Vista 32K with a 2013 Mini Cooper S Roadster toad.