Long bed vs short bed

I'm assuming you are getting a club cab. If you use the truck as a truck for work etc, the short bed is a big aggravation. If you are using it like a car when not towing, the short bed is best in my opinion. I have a club cab Dodge short bed now in the valley, and even it is a royal pita parking etc. put my vote with the slider hitch folks.

I have a slider hitch with a short bed. The only time I've used the slider was to experiment maneuvering with it. (My 5er does not have the indented front panel). I try my best to not get in situations where I'd need to turn so sharp as to be concerned about making contact with the cab. Turning that tight is very hard on the 5ers tires due to the side-slide it causes. I've never wished I had a long bed.

P.S. This is indeed a good point, romor: "...a long box would have required a slider to keep the bumper from hitting the trailer in turns."

Short bed is fine with a sliding hitch. I towed mine for 8 years that way. I agree, a short bed makes a much better daily driver than a long bed.

You won't necessarily 'need' a slider with a standard bed, it depends on the trailer design. Look for an indent on the lower corner of the trailer to provide extra clearance.
We have a standard box, it is fine with our current trailer. The previous one had a shorter nose with an east west bed, a long box would have required a slider to keep the bumper from hitting the trailer in turns.

Never had a problem towing with a short box with out a slider.

You have to get a slider if you have a short bed, and in my opinion, sliders are a hassle to operate and maintain. In addition, depending on your trailer's cap design, there is a good change you will hit your trailer's cap with the truck's cab one day anyway. When I had a short bed I hit mine twice. Both times going onto driveways of gas stations. I don't use my truck as a daily driver and maneuvering in parking lots can be a hassle, but a small price to pay in my opinion. I like my long bed much better than I did my short bed.

Long bed, no other option in my mind...

You're going to tow about a 1,000# more than I do, (my rig is at 16,050#), with pin weight of 3300...I have the dually in my sig with the 4:10 and it's my daily driver, but I tow in the mountains and enjoy the stability of the dually on some of the very curvy, mountainous secondary routes I'm on at times.

I've towed with both short bed and long bed, and with heavier longer 5er's, I prefer the long bed..

If your 5er has the indents in the front end cap, a short bed should work, think you said you had never had a problem before...shouldn't have one now

On Edit: If you've done all the math with weights, then seems like you're ok:)