Having had a second look at the pictures, ours are slightly different; they have 9 seats in the front, and an internal bulkhead to separate the loadspace. I’ve tried to google some pictures to illustrate, but there’s millions of different variants. Perhaps ours are LWB versions?
Either way, i think you’ll be ok.
Dangerous Beans – I tend to load the bikes in widthways on their back wheels, with the front wheel up against the walls. Like this, but much less tidy and with the front wheels still attached: