It sounds like a hybrid (HTT) would be the best option for you with it's easy setup. Unless your kids can really help with the setup making it less time consuming. Of course a big SUV like a Yukon XL/Suburban/Sequoia (my personal favorite) would be ideal for towing purposes and hauling gear, but you would have low MPGs for the 95% (est.) of the time when not towing. There are a few V6s that can tow a hybrid, allowing for much better daily driver gas mileage. The Dodge Durango has a 6200lb tow cap, the Chevy Traverse/GMC Acadia has a 5200lb tow cap and the Toyota 4Runner and Ford Explorer has a 5000lb tow cap IIRC.
When looking at trailer's weights, you'll often hear the dry weight. Forget the dry weight as it is a fictional number. The number you want is the Gross Vehicle Weight Rating, GVWR, the maximum the trailer can weigh. You can also get the GVWR by adding the dry weight to the CCC, cargo carrying capacity. You can expect to be within about 10% of the GVWR when towing in the real world. Good Luck!
