2013 Chevy Express 3500 vs. Jayco 32BHDS?

Where did you get the numbers for the trailer? I have a 2014 Jayco 32BHDS and dry weight (just weighed a couple of days ago) is 8520 (metal sides, not fiberglass) completely empty. I have a 2015 F250 6.7L 4x4 crew cab. I am a gambling person, so if I were in your shoes, I would give it a shot. The problem you will have is going up/down hills. Flat, you will probably be ok. That 6.0 is going to be screaming up those hills. Most will tell you not to do it. Here are my numbers from my 2005 Chevy and then just a few days ago with my new 2015 Ford...

Chevy
WDH connected
Steer axle: 4120 lbs
Drive axle: 4920 lbs
Trailer axle: 8100 lbs
Total axle: 17140 lbs

WDH not connected
Steer axle: 3980 lbs
Drive axle: 5120 lbs
Trailer axle: 8040 lbs
Total axle: 17140 lbs

Truck only
Steer axle: 4400 lbs
Drive axle: 3600 lbs
Total axle: 8000 lbs

Ford
Truck and trailer with WDH connected
Steer Axle - 4580
Drive Axle - 4800
Trailer Axle - 7420
Gross Weight - 16800

Truck and trailer NO WDH connected
Steer Axle - 4300
Drive Axle - 5200
Trailer Axle - 7280
Gross Weight - 16780

Truck only
Steer Axle - 4800
Drive Axle - 3480
Gross Weight - 8280