Ditto one what every one else has said about weight. Have you considered upgrading your tow vehicle as well? May be able to do an even (or close-to) even trade for a little bigger SUV or vehicle with a higher tow rating. I have the slide on mine even though most trips its just me and the dog. So much less claustrophobic inside! When I do have friends that come along you can move around inside without tripping over one another. The other thought for you to consider, used pup prices are usually lower this time of year. People selling before winter time. In the spring, demand will be up and it will be harder to find one, and when they do come available they will sell quickly.