As
@BigSkiddy says, you have 2 options with the towbar, the genuine Mopar (made by Best Bars in NZ) or the Hayman Reese one.
The Mopar bar will cost more but will retain the rear towhook (no biggie IMO as you just use the towbar with a recovery hitch in the receiver if needed) and will allow the fitment of the LRA aux fuel tank, if you ever need/want one.
The HR bar won't allow the fitment of the aux tank.
I would suggest having a very good look at a proportional brake controller like the Tekonsha P3. They are a far superior brake controller to the Redarc and the like.
Yes they are bulkier but they are a true set and forget brake controller.
The one time you forget to turn up the Redarc is when you'll have to jump on the brakes in an emergency and the van won't help you stop at all, pretty scary thought really....
There is no factory harness for a brake controller in the Jeep. You'll have to run all the wires. Just make sure you don't pick up the brake wire from the brake switch.