Which bunkhouse model for our two sets of twins?

Thanks everyone for all the responses.

TurnThePage - that looks like a very nice option, and there's a dealer nearby with one in stock to take a look at. They also have a 2800 model that still weighs only 7,500 GVWR, although that takes the length to 32' overall. At about the top of our price range, but if it gives us much more happiness for a longer time, I'm good with that.