If it was just you and your wife, there are some units that are mini-van towable. But with 4 kids (who will grow and gain more weight, and also require more "toys") I don't think you have a lot of options. We too got tired of tenting and "moved up". We had pop-ups for over 10 years. My daughter cried when we sold it. There is nothing wrong with using the campground showers. I still do to get more than a "navy" shower in the trailer. Our first HTT had a GVWR of 3450# and we towed it with a mini-van for about the first 18 months. But again, it was just the wife and I.