Is the 2720 big enough for 5?

My husband and I have been looking into TM for several years, but have been unable to jump into one, until now. We have 3 boys...a 4 yr. old and twin 2 yr. olds. We found a barely used 2006 in our area (Idaho) and the dealer is asking $20,995. They admitted that they want to get rid of it (they aren't a TM dealer, and TM isn't known in our area), and that they'll make us a great deal. However, we are afraid the dining area, especially, will be too small for us. We will mostly be camping at campgrounds with facilities. We love the new colors in the 2007s, but the price for a used one so close to home is very tempting. We were considering driving to Salt Lake City, Utah, to get a new 3023. Any insight would be helpful!