Definitely, Stu.
It does seem a bit odd, though that all the teenage housemates will be 18 years old. A mixture of younger and older teens might have been more 'entertaining'.
Personally, if someone mentions teenagers I tend to think of the 13-17 age range . . . . . . to me an 18 year old (although technically still a teenager, I know!) is a young adult.
Maybe I'm just weird, though.
