My wife and I are looking to get a travel trailer that will be big enough for us and our little girl who is now almost a year old. I have a 1994 Yukon GT with a towing package. The hitch on the back has a tongue weight of 850 pounds and towing capacity of 7,000 pounds. I don't want to get anything to small because we plan on having another child in the future. What size trailer (meaning length and weight) would you suggest for us? (What size is too much to be safe.) We want to find out what size we should be looking for before we go to see a dealer.