Check out Roadmaster and Blue Ox for tow bar stuff. The brackets for the Jeep will depend on the front bumper. A company call Cooltech makes a wiring harness that makes it really easy for the brake lights & turn signals. Pricy though...
An auxiliary brake system like a Brake Buddy or similiar is a must, but expensive as well.
Check the state laws on towing behind the 5th wheel, as I don't recall seeing such a setup in my 7 1/2 years on the road.
I've towed a TJ about 55,000 miles and my 2013 JKUR about 5,000 miles to this point with no issues. You just need to pay close attention to the details.
Good luck with it.