Dave,
The Zeppelin is 18-19 ft. from hitch ball to rear bumper. It weighs 3300 lbs. with all my accessories. Tongue weight is about 460 lbs.
The Equal-i-zer Weight distributed hitch not only weight distributes but has built in friction sway control. Technically on either side of it which makes it 2 built in sway control devices. Check out their site...
www.equalizerhitch.com
The TT has 10" electric drum brakes so I hooked up a Prodigy Brake Controller. If your a little wiring savy you can do it yourself or just take it to a professional to install.
Jeep proclaims with the 3.7L , Auto. Trans and their tow package you can tow a maximum trailer length of 25' and 5,000 lbs. properly equiped. Personally I wouldn't go to those maximun limits b/c it leaves no margin for error. The jeep also has a short wheel base compared to a pickup truck. Which is where the sway problem can be that... a problem. The trailer length being too long for the wheel base of the tow vehicle. It's like the tail wagging the dog instead of the other way around.
At 23' and 3500 lbs. with weight distribution and a brake controller you should be fine. My Jeep tows my set up like it isn't even there. I'm not joking about that statement. The Jeep pulls, tows and stops just fine the way I have my system arranged. Of coarse I keep it at a steady 60 mph, give myself extra stopping room, proper tire pres. and the such. Lord knows I've seem guys blow by me at 80, that's totally nutz. So tow safe. Hope this helped. Joe