Now knowing that you have 7 large passengers, that will definitely be the constraint for you. Even pulling a Scamp, that's still likely to have 150-200 pounds of tongue weight. Most 7-pax SUVs have about 1400 pounds of payload, so if your passengers with luggage average 200 pounds each, you're already maxed out before hooking up even the lightest trailer.
How big of a hurry are you in? The new Explorers are just now rolling out, but unfortunately to fleets first before retail customers. The big benefit is they dropped 200 pounds of curb weight, while also moving to a RWD architecture with a longer wheelbase. This means some models up over 1,800 pounds of payload!
Have you thought about a van? Most minivans will still have a little more payload than a 7-pax SUV, and have a 3500# tow rating so you'd still be ok there.
