First, welcome to JOF.
I would highly recommend doing some more research on the actual towing ability of your pickup. There is lots of good info in the "towing" section. I would also encourage you to ask questions in that section as well, I have a feeling you may be pushing it with that combo.
2013 Starcraft Travel Star 229TB
2011 Jayco X17Z(traded in)
2010 Jayco Jay Series 1207(traded for the 17Z)
2011 Chevrolet Silverado 2500HD Z71 CC 6.0L/3.73
Reese "Pro Series" 800lb Trunnion WDH w/sway control