I had a bunkhouse for a couple of years with the thought in mind that the grandchildren would go with us often. Unfortunately, the GC were too busy to go very much so I was stuck with a TT had lots of small beds and not much floor space. Our current TT is 36 feet long and is basically designed for two people, two slides and lots of floor space. On the rare occasions when the GC do come along they sleep on the sofa bed and dinette or in a tent. Our trailer is pretty heavy and we pull with a V10 F250. Best advice is get what you are comfortable staying in and towing and let the family "rough it".