Give me your feedback - Dutchmen Aerolite Bunk House

We're in the beginning stages of evaluating TTs to purchase. We will probably buy new but we will see. We're also evaluating tow vehicles and will most likely buy a 2016 Expedition and then purchase the TT after that. We went to an RV show recently so got to see a lot of neat floor plans. We have 4 kids and so we need a bunkhouse. But towing with the Expedition means we need to be careful with our weight. With all that in mind, we've seen several trailers that have a floor plan similar to this (link below). Our kids are 7, 5, 3, and 2. We plan on doing long weekend camping for the most part. Do you think this size TT is realistically comfortable for a family of 6? I know we have enough beds, but what about general space and storage? Here's a Dutchmen Aerolite in the floorpan that we've been eyeing. The length, weight, and features look good. We like the u-shaped dinette and the bunks. Ideally we'd have 4 bunks but those are harder to find in a weight we're comfortable with.

Anyway... thoughts on this floor plan for a family of 6 are appreciated. Thanks! :)

http://www.dutchmen.com/aerolite/floorplans-and-pictures/floorplan-details?modelId=3649