The reason that your Class V is only rated for 5K when it's rated for far more than that normally is because your motorhome is only rated for a maximum towing capacity of 5,000-lbs.
However, when you flat tow a vehicle all of the vehicle's weight is taken on by the tow-bars not the necessarily the hitch itself. So, all you'd need is to use a set of tow bars that can handle your Jeeps weight.
That said, for a complete flat towing setup you're going to need:
-A base plate kit, Blue Ox... view full answer...