ALL 4x4 Wranglers are 4 down towable. 2 wheel drives are not unless you have a drivesahft disconnect.
Look for the trail rated badge on the driver side. If you have one, it's 4 down towable.
I use a Ready Brute, Ready Brake set up. I have roadmaster brackets and receivers. All in and done for under $1400.00.
If you have an Automatic, place it in park, the transfer case in Neutral. 2008 and newer o not need to have the key in the ignition as does my 2007.
Yes, get aux braking. It's not expensive and it may save someone's life.
Rick and Julia
2005 Dolphin 5376, W24, Solid Body Paint, Koni FSD's
2007 Wrangler Unlimited....it follows us everywhere.