We will be traveling during the Thanksgiving holiday and will be getting a rental car at the air port. There are 5 of us. 2 adults, and 3 kids: 6, 3, and 7m. Which rental car category should we pick? I'm scared we will get there and I won't be able to get the seats in! We will have a B-Safe, a Scenera (FF) and a Vivo hbb. I pretty confident in my install skills but I've never installed 3 in a row. Looking to save $ so the cheapest car that can fit us all comfortably is preferred.