From published data, it appears that you can, Mark. Your GVWR for your rig is 18,000 lb and the Gross Combined Wt Rating is 23,000 lb (5000 lb more.) The max curb wt of your Sport Wrangler is listed as 4100 lb so you could carry as much as 900 lb payload (max) in it while flat towing. You might want to verify that your hitch rating is, in fact 5000 lb but it is supposed to be exactly that.
As always, it is a good idea to weigh your coach as typically loaded for travel to ensure you are below the 18000 lb GVWR. That weight ticket is also an excellent way to ascertain your best/recommended tire pressure settings from tire manufacturers inflation tables you can find online. Those inflation pressures will almost always yield the best ride and handling.
Good times and safe travels……………